/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:10:58,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:10:58,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:10:59,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:10:59,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:10:59,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:10:59,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:10:59,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:10:59,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:10:59,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:10:59,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:10:59,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:10:59,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:10:59,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:10:59,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:10:59,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:10:59,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:10:59,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:10:59,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:10:59,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:10:59,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:10:59,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:10:59,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:10:59,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:10:59,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:10:59,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:10:59,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:10:59,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:10:59,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:10:59,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:10:59,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:10:59,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:10:59,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:10:59,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:10:59,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:10:59,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:10:59,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:10:59,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:10:59,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:10:59,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:10:59,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:10:59,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:10:59,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:10:59,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:10:59,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:10:59,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:10:59,087 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:10:59,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:10:59,088 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:10:59,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:10:59,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:10:59,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:10:59,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:10:59,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:10:59,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:10:59,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:10:59,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:10:59,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:10:59,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:10:59,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:10:59,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:10:59,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:10:59,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:10:59,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:10:59,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:10:59,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:10:59,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:10:59,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:10:59,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:10:59,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:10:59,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:10:59,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:10:59,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:10:59,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:10:59,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:10:59,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:10:59,616 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:10:59,617 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-25 01:10:59,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cefa3c3a/901d9d457adf4ac4841ac05512633ff3/FLAGc05a418c5 [2020-09-25 01:11:00,253 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:11:00,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-25 01:11:00,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cefa3c3a/901d9d457adf4ac4841ac05512633ff3/FLAGc05a418c5 [2020-09-25 01:11:00,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cefa3c3a/901d9d457adf4ac4841ac05512633ff3 [2020-09-25 01:11:00,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:11:00,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:11:00,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:11:00,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:11:00,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:11:00,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:11:00" (1/1) ... [2020-09-25 01:11:00,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45aac576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00, skipping insertion in model container [2020-09-25 01:11:00,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:11:00" (1/1) ... [2020-09-25 01:11:00,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:11:00,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:11:00,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:11:00,896 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:11:00,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:11:00,937 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:11:00,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00 WrapperNode [2020-09-25 01:11:00,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:11:00,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:11:00,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:11:00,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:11:00,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00" (1/1) ... [2020-09-25 01:11:00,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00" (1/1) ... [2020-09-25 01:11:01,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00" (1/1) ... [2020-09-25 01:11:01,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00" (1/1) ... [2020-09-25 01:11:01,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00" (1/1) ... [2020-09-25 01:11:01,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00" (1/1) ... [2020-09-25 01:11:01,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00" (1/1) ... [2020-09-25 01:11:01,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:11:01,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:11:01,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:11:01,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:11:01,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:11:01,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:11:01,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:11:01,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:11:01,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:11:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:11:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:11:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:11:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:11:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:11:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:11:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:11:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:11:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:11:01,468 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:11:01,468 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 01:11:01,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:11:01 BoogieIcfgContainer [2020-09-25 01:11:01,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:11:01,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:11:01,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:11:01,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:11:01,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:11:00" (1/3) ... [2020-09-25 01:11:01,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3c66b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:11:01, skipping insertion in model container [2020-09-25 01:11:01,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:00" (2/3) ... [2020-09-25 01:11:01,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3c66b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:11:01, skipping insertion in model container [2020-09-25 01:11:01,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:11:01" (3/3) ... [2020-09-25 01:11:01,486 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-09-25 01:11:01,499 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:11:01,511 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:11:01,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:11:01,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:11:01,608 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:11:01,608 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:11:01,608 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:11:01,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:11:01,609 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:11:01,609 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:11:01,609 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:11:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-09-25 01:11:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 01:11:01,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:01,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:11:01,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash -980226087, now seen corresponding path program 1 times [2020-09-25 01:11:01,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:01,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759198087] [2020-09-25 01:11:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:01,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:03,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 01:11:03,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:11:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-09-25 01:11:03,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 01:11:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 01:11:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 01:11:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:11:03,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:03,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:03,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:11:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:11:03,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:03,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:11:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:03,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759198087] [2020-09-25 01:11:03,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:11:03,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:11:03,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270547550] [2020-09-25 01:11:03,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:11:03,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:03,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:11:03,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:11:03,288 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 9 states. [2020-09-25 01:11:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:03,816 INFO L93 Difference]: Finished difference Result 101 states and 128 transitions. [2020-09-25 01:11:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 01:11:03,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 01:11:03,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:03,841 INFO L225 Difference]: With dead ends: 101 [2020-09-25 01:11:03,842 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 01:11:03,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:11:03,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 01:11:03,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2020-09-25 01:11:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 01:11:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-25 01:11:03,906 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 34 [2020-09-25 01:11:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:03,907 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-25 01:11:03,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:11:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-25 01:11:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 01:11:03,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:03,910 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:11:03,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:11:03,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:03,911 INFO L82 PathProgramCache]: Analyzing trace with hash -135481908, now seen corresponding path program 1 times [2020-09-25 01:11:03,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:03,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720461622] [2020-09-25 01:11:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:05,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:05,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 01:11:05,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 01:11:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-09-25 01:11:05,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:11:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 01:11:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:11:05,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:05,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:05,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:05,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:05,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:11:05,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:11:05,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:05,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:11:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:05,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720461622] [2020-09-25 01:11:05,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:11:05,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 01:11:05,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675515662] [2020-09-25 01:11:05,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:11:05,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:05,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:11:05,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:11:05,923 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 8 states. [2020-09-25 01:11:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:06,268 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2020-09-25 01:11:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:11:06,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-09-25 01:11:06,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:06,271 INFO L225 Difference]: With dead ends: 100 [2020-09-25 01:11:06,271 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 01:11:06,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:11:06,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 01:11:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2020-09-25 01:11:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 01:11:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-09-25 01:11:06,284 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 40 [2020-09-25 01:11:06,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:06,285 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-09-25 01:11:06,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:11:06,285 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-09-25 01:11:06,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 01:11:06,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:06,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:11:06,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:11:06,288 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:06,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1866176905, now seen corresponding path program 1 times [2020-09-25 01:11:06,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:06,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611644080] [2020-09-25 01:11:06,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:06,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:07,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:08,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 01:11:08,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 01:11:08,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2036 [2020-09-25 01:11:08,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:11:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 01:11:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 01:11:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:08,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:11:08,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:11:08,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:08,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:11:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:08,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:08,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:08,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:08,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:11:08,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:08,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:08,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:08,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:08,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:11:08,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611644080] [2020-09-25 01:11:08,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:11:08,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 01:11:08,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68065195] [2020-09-25 01:11:08,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:11:08,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:08,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:11:08,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:11:08,433 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 8 states. [2020-09-25 01:11:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:08,672 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-09-25 01:11:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 01:11:08,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-25 01:11:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:08,673 INFO L225 Difference]: With dead ends: 58 [2020-09-25 01:11:08,674 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:11:08,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 01:11:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:11:08,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:11:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:11:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:11:08,676 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-09-25 01:11:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:08,676 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:11:08,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:11:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:11:08,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:11:08,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:11:08,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:11:08,796 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:11:08,796 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) [2020-09-25 01:11:08,796 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:11:08,797 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:11:08,797 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 01:11:08,797 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 01:11:08,797 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:11:08,797 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:11:08,798 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:11:08,798 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 01:11:08,798 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 01:11:08,798 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:11:08,798 INFO L271 CegarLoopResult]: At program point L27(lines 14 29) the Hoare annotation is: true [2020-09-25 01:11:08,798 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2020-09-25 01:11:08,799 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-09-25 01:11:08,799 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 01:11:08,799 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 01:11:08,799 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 01:11:08,799 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 01:11:08,799 INFO L271 CegarLoopResult]: At program point L23-5(lines 23 26) the Hoare annotation is: true [2020-09-25 01:11:08,800 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 01:11:08,800 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 01:11:08,800 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 01:11:08,800 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 01:11:08,800 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-25 01:11:08,801 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 01:11:08,801 INFO L268 CegarLoopResult]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2020-09-25 01:11:08,801 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 01:11:08,801 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-25 01:11:08,801 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 01:11:08,801 INFO L268 CegarLoopResult]: For program point L24-5(line 24) no Hoare annotation was computed. [2020-09-25 01:11:08,802 INFO L264 CegarLoopResult]: At program point L24-6(lines 24 26) the Hoare annotation is: (<= (+ main_~i~0 1) main_~n~0) [2020-09-25 01:11:08,802 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 01:11:08,802 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 01:11:08,802 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 01:11:08,802 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 01:11:08,803 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 01:11:08,803 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 01:11:08,803 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 01:11:08,803 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 01:11:08,803 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 26) the Hoare annotation is: (and (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) (+ main_~i~0 (* 2 main_~n~0)))) [2020-09-25 01:11:08,804 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 01:11:08,804 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 01:11:08,804 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 01:11:08,804 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2020-09-25 01:11:08,804 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 29) the Hoare annotation is: true [2020-09-25 01:11:08,805 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~n~0)))) (and (<= (+ main_~k~0 4) .cse0) (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) .cse0))) [2020-09-25 01:11:08,805 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 26) no Hoare annotation was computed. [2020-09-25 01:11:08,805 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 01:11:08,805 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 01:11:08,805 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 01:11:08,806 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 01:11:08,806 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 01:11:08,806 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 01:11:08,806 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:11:08,806 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 01:11:08,807 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 01:11:08,807 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:11:08,807 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 01:11:08,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:11:08 BoogieIcfgContainer [2020-09-25 01:11:08,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:11:08,836 INFO L168 Benchmark]: Toolchain (without parser) took 8232.91 ms. Allocated memory was 138.9 MB in the beginning and 282.6 MB in the end (delta: 143.7 MB). Free memory was 101.4 MB in the beginning and 92.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 152.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:08,837 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:11:08,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.85 ms. Allocated memory is still 138.9 MB. Free memory was 101.0 MB in the beginning and 91.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:08,839 INFO L168 Benchmark]: Boogie Preprocessor took 122.07 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.2 MB in the beginning and 179.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:08,840 INFO L168 Benchmark]: RCFGBuilder took 409.84 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 163.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:08,841 INFO L168 Benchmark]: TraceAbstraction took 7354.26 ms. Allocated memory was 201.9 MB in the beginning and 282.6 MB in the end (delta: 80.7 MB). Free memory was 163.0 MB in the beginning and 92.6 MB in the end (delta: 70.5 MB). Peak memory consumption was 151.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:08,846 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.85 ms. Allocated memory is still 138.9 MB. Free memory was 101.0 MB in the beginning and 91.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.07 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.2 MB in the beginning and 179.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.84 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 163.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7354.26 ms. Allocated memory was 201.9 MB in the beginning and 282.6 MB in the end (delta: 80.7 MB). Free memory was 163.0 MB in the beginning and 92.6 MB in the end (delta: 70.5 MB). Peak memory consumption was 151.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: i + 1 <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: i + 1 <= n && j + 3 <= i + 2 * n - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 262 SDslu, 107 SDs, 0 SdLazy, 701 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 14 PreInvPairs, 23 NumberOfFragments, 53 HoareAnnotationTreeSize, 14 FomulaSimplifications, 283 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 10551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 5/7 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...