/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=SMALLEST --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/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:30:32,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:30:32,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:30:32,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:30:32,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:30:32,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:30:32,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:30:32,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:30:32,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:30:32,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:30:32,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:30:32,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:30:32,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:30:32,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:30:32,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:30:32,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:30:32,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:30:32,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:30:32,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:30:32,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:30:32,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:30:32,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:30:32,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:30:32,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:30:32,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:30:32,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:30:32,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:30:32,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:30:32,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:30:32,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:30:32,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:30:32,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:30:32,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:30:32,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:30:32,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:30:32,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:30:32,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:30:32,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:30:32,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:30:32,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:30:32,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:30:32,338 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 [2020-09-24 18:30:32,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:30:32,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:30:32,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:30:32,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:30:32,363 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:30:32,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:30:32,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:30:32,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:30:32,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:30:32,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:30:32,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:30:32,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:30:32,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:30:32,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:30:32,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:30:32,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:30:32,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:30:32,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:30:32,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:30:32,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:30:32,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:30:32,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:30:32,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:30:32,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:30:32,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:30:32,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:30:32,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:30:32,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:30:32,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:30:32,368 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:30:32,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:30:32,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:30:32,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:30:32,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:30:32,859 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:30:32,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-24 18:30:32,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e375e999b/42a9725d6d154bc397d98e7974cf5f63/FLAG9f8057ca5 [2020-09-24 18:30:33,501 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:30:33,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-24 18:30:33,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e375e999b/42a9725d6d154bc397d98e7974cf5f63/FLAG9f8057ca5 [2020-09-24 18:30:33,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e375e999b/42a9725d6d154bc397d98e7974cf5f63 [2020-09-24 18:30:33,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:30:33,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:30:33,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:33,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:30:33,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:30:33,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:33" (1/1) ... [2020-09-24 18:30:33,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447ed8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:33, skipping insertion in model container [2020-09-24 18:30:33,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:33" (1/1) ... [2020-09-24 18:30:33,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:30:33,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:30:34,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:34,122 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:30:34,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:34,158 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:30:34,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34 WrapperNode [2020-09-24 18:30:34,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:34,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:30:34,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:30:34,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:30:34,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34" (1/1) ... [2020-09-24 18:30:34,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34" (1/1) ... [2020-09-24 18:30:34,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34" (1/1) ... [2020-09-24 18:30:34,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34" (1/1) ... [2020-09-24 18:30:34,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34" (1/1) ... [2020-09-24 18:30:34,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34" (1/1) ... [2020-09-24 18:30:34,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34" (1/1) ... [2020-09-24 18:30:34,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:30:34,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:30:34,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:30:34,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:30:34,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:30:34,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:30:34,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:30:34,352 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:30:34,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:30:34,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:30:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:30:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:30:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:30:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:30:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:30:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:30:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:30:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:30:34,673 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:30:34,674 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 18:30:34,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:30:34 BoogieIcfgContainer [2020-09-24 18:30:34,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:30:34,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:30:34,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:30:34,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:30:34,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:30:33" (1/3) ... [2020-09-24 18:30:34,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bce3611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:30:34, skipping insertion in model container [2020-09-24 18:30:34,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:34" (2/3) ... [2020-09-24 18:30:34,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bce3611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:30:34, skipping insertion in model container [2020-09-24 18:30:34,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:30:34" (3/3) ... [2020-09-24 18:30:34,689 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-24 18:30:34,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:30:34,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:30:34,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:30:34,761 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:30:34,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:30:34,762 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:30:34,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:30:34,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:30:34,762 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:30:34,762 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:30:34,762 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:30:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-24 18:30:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 18:30:34,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:34,792 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] [2020-09-24 18:30:34,792 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:34,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-24 18:30:34,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:34,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065707913] [2020-09-24 18:30:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:35,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:35,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:30:35,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-24 18:30:35,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:30:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:30:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:30:35,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:30:35,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:35,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:35,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:35,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:35,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:30:35,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:35,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:35,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065707913] [2020-09-24 18:30:35,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:35,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:30:35,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754942600] [2020-09-24 18:30:35,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:30:35,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:35,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:30:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:30:35,317 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-24 18:30:35,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:35,457 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-24 18:30:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:30:35,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 18:30:35,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:35,472 INFO L225 Difference]: With dead ends: 89 [2020-09-24 18:30:35,473 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 18:30:35,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:35,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 18:30:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 18:30:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 18:30:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-24 18:30:35,527 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-24 18:30:35,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:35,528 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-24 18:30:35,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:30:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-24 18:30:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 18:30:35,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:35,530 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] [2020-09-24 18:30:35,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:30:35,531 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:35,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-24 18:30:35,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:35,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363504200] [2020-09-24 18:30:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:35,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:35,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:35,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:30:35,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:35,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 18:30:35,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:30:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:30:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:30:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:35,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:35,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:35,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:35,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363504200] [2020-09-24 18:30:35,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:35,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:30:35,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19616617] [2020-09-24 18:30:35,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:30:35,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:35,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:30:35,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:35,789 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-24 18:30:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:35,960 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-24 18:30:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:30:35,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 18:30:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:35,963 INFO L225 Difference]: With dead ends: 90 [2020-09-24 18:30:35,964 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 18:30:35,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 18:30:35,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-24 18:30:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 18:30:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-24 18:30:35,982 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-24 18:30:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:35,983 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-24 18:30:35,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:30:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-24 18:30:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 18:30:35,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:35,997 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:30:35,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:30:35,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:35,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-24 18:30:35,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:35,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152796762] [2020-09-24 18:30:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:36,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:36,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:30:36,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 18:30:36,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:30:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:30:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:30:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:36,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:36,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:36,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:36,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:36,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:36,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:36,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:36,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:36,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:36,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:36,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:36,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:36,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:30:36,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:36,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:36,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152796762] [2020-09-24 18:30:36,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:36,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:30:36,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845448898] [2020-09-24 18:30:36,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:30:36,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:36,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:30:36,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:30:36,161 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-24 18:30:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:36,237 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-24 18:30:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:30:36,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-24 18:30:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:36,242 INFO L225 Difference]: With dead ends: 90 [2020-09-24 18:30:36,243 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 18:30:36,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 18:30:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-24 18:30:36,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 18:30:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-24 18:30:36,276 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-24 18:30:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:36,277 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-24 18:30:36,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:30:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-24 18:30:36,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 18:30:36,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:36,279 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] [2020-09-24 18:30:36,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:30:36,280 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:36,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:36,281 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-24 18:30:36,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:36,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486576288] [2020-09-24 18:30:36,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:36,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:36,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:36,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:30:36,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:36,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-09-24 18:30:36,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:30:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:30:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:30:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:30:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:36,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:36,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:36,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:36,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:36,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:36,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:36,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:36,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:36,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:36,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:36,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:30:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:36,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:36,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:36,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:36,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:36,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486576288] [2020-09-24 18:30:36,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:36,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:30:36,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610114774] [2020-09-24 18:30:36,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:30:36,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:36,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:30:36,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:36,911 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 8 states. [2020-09-24 18:30:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:37,211 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2020-09-24 18:30:37,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:30:37,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-24 18:30:37,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:37,215 INFO L225 Difference]: With dead ends: 146 [2020-09-24 18:30:37,216 INFO L226 Difference]: Without dead ends: 144 [2020-09-24 18:30:37,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:30:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-24 18:30:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2020-09-24 18:30:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 18:30:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-09-24 18:30:37,235 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 38 [2020-09-24 18:30:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:37,235 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-09-24 18:30:37,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:30:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-09-24 18:30:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 18:30:37,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:37,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:37,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:30:37,238 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:37,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:37,239 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-24 18:30:37,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:37,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670391331] [2020-09-24 18:30:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:37,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:38,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:30:38,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:30:38,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-09-24 18:30:38,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:30:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 18:30:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:38,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:38,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:38,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:38,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:38,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:38,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670391331] [2020-09-24 18:30:38,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:38,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:30:38,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909636383] [2020-09-24 18:30:38,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:30:38,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:38,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:30:38,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:30:38,279 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 4 states. [2020-09-24 18:30:38,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:38,361 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-09-24 18:30:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:30:38,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-24 18:30:38,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:38,363 INFO L225 Difference]: With dead ends: 145 [2020-09-24 18:30:38,364 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 18:30:38,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:30:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 18:30:38,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-24 18:30:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 18:30:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-09-24 18:30:38,391 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 38 [2020-09-24 18:30:38,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:38,392 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-09-24 18:30:38,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:30:38,392 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-09-24 18:30:38,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 18:30:38,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:38,394 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:38,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:30:38,395 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:38,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:38,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-09-24 18:30:38,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:38,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877595134] [2020-09-24 18:30:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:38,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:38,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:30:38,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:38,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 18:30:38,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:30:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:30:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:30:38,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:38,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:38,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:38,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:38,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:38,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:30:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:38,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:38,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:38,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:38,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:38,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:38,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:38,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:38,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:38,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:38,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:38,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 18:30:38,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877595134] [2020-09-24 18:30:38,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:38,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:30:38,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635300660] [2020-09-24 18:30:38,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:30:38,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:38,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:30:38,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:38,670 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 8 states. [2020-09-24 18:30:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:38,928 INFO L93 Difference]: Finished difference Result 152 states and 179 transitions. [2020-09-24 18:30:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:30:38,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-24 18:30:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:38,933 INFO L225 Difference]: With dead ends: 152 [2020-09-24 18:30:38,933 INFO L226 Difference]: Without dead ends: 150 [2020-09-24 18:30:38,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:30:38,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-24 18:30:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 125. [2020-09-24 18:30:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-24 18:30:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-09-24 18:30:38,963 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 46 [2020-09-24 18:30:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:38,964 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-09-24 18:30:38,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:30:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-09-24 18:30:38,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 18:30:38,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:38,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:38,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:30:38,972 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:38,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1446982975, now seen corresponding path program 2 times [2020-09-24 18:30:38,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:38,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517349394] [2020-09-24 18:30:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 18:30:41,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:30:41,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-09-24 18:30:41,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:30:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:30:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:30:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:41,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:41,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:30:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:41,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 18:30:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:41,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:30:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:30:41,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 18:30:41,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517349394] [2020-09-24 18:30:41,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:41,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:30:41,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9789070] [2020-09-24 18:30:41,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:30:41,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:41,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:30:41,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:30:41,330 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 9 states. [2020-09-24 18:30:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:41,557 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2020-09-24 18:30:41,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:30:41,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-24 18:30:41,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:41,560 INFO L225 Difference]: With dead ends: 155 [2020-09-24 18:30:41,560 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 18:30:41,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:30:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 18:30:41,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 130. [2020-09-24 18:30:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-24 18:30:41,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-09-24 18:30:41,575 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 47 [2020-09-24 18:30:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:41,576 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-09-24 18:30:41,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:30:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-09-24 18:30:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 18:30:41,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:41,578 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:41,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:30:41,579 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:41,579 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-24 18:30:41,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:41,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717196729] [2020-09-24 18:30:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:30:44,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:30:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2608 [2020-09-24 18:30:44,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:30:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:30:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:44,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:44,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:30:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:44,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:44,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 18:30:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:44,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:44,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:44,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:44,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:44,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:44,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 18:30:44,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717196729] [2020-09-24 18:30:44,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:44,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:30:44,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90438171] [2020-09-24 18:30:44,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:30:44,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:44,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:30:44,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:30:44,283 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-09-24 18:30:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:44,372 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2020-09-24 18:30:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:30:44,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-24 18:30:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:44,374 INFO L225 Difference]: With dead ends: 136 [2020-09-24 18:30:44,374 INFO L226 Difference]: Without dead ends: 134 [2020-09-24 18:30:44,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:30:44,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-24 18:30:44,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 100. [2020-09-24 18:30:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 18:30:44,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-09-24 18:30:44,384 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 50 [2020-09-24 18:30:44,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:44,384 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-09-24 18:30:44,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:30:44,384 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-09-24 18:30:44,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 18:30:44,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:44,386 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:44,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:30:44,386 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:44,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:44,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1080348991, now seen corresponding path program 2 times [2020-09-24 18:30:44,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:44,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802642338] [2020-09-24 18:30:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:30:44,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 18:30:44,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:30:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:30:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 18:30:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:44,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:44,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:44,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:44,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:44,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:44,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:44,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:44,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:44,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:44,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:44,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 18:30:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:44,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:44,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:44,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:44,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:30:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:44,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:44,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 18:30:44,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802642338] [2020-09-24 18:30:44,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:44,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 18:30:44,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417619435] [2020-09-24 18:30:44,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:30:44,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:44,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:30:44,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:30:44,794 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 10 states. [2020-09-24 18:30:45,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:45,161 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-09-24 18:30:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:30:45,161 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-24 18:30:45,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:45,162 INFO L225 Difference]: With dead ends: 116 [2020-09-24 18:30:45,162 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:30:45,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:30:45,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:30:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:30:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:30:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:30:45,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-24 18:30:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:45,165 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:30:45,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:30:45,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:30:45,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:30:45,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:30:45,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:30:45,691 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 18:30:45,691 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:30:45,691 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:30:45,692 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:30:45,692 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:30:45,692 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:30:45,692 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:30:45,692 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:30:45,692 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 18:30:45,693 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 18:30:45,693 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:30:45,693 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-24 18:30:45,693 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-24 18:30:45,693 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 18:30:45,693 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 18:30:45,693 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 18:30:45,694 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1))) [2020-09-24 18:30:45,694 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 18:30:45,694 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 18:30:45,695 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 18:30:45,695 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 18:30:45,696 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-24 18:30:45,696 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 18:30:45,696 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-24 18:30:45,696 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 18:30:45,696 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 18:30:45,696 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 18:30:45,696 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 18:30:45,697 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 18:30:45,697 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-24 18:30:45,697 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse0 (* main_~i~0 2)) (.cse3 (+ (* 2 main_~i~0) 1))) (let ((.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse4 (<= .cse3 main_~k~0)) (.cse5 (<= main_~k~0 main_~n~0)) (.cse2 (= .cse0 main_~j~0))) (or (and (= .cse0 main_~k~0) .cse1 .cse2) (and (<= .cse3 main_~j~0) .cse1 .cse4 .cse5) (and .cse4 .cse5 .cse2)))) [2020-09-24 18:30:45,697 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 18:30:45,697 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 18:30:45,697 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-24 18:30:45,698 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-24 18:30:45,698 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-24 18:30:45,698 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-24 18:30:45,698 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse4 (* main_~i~0 2)) (.cse1 (+ (* 2 main_~i~0) 1))) (let ((.cse2 (<= (+ main_~j~0 1) main_~n~0)) (.cse0 (<= (+ main_~k~0 1) main_~n~0)) (.cse3 (<= .cse1 main_~k~0)) (.cse5 (= .cse4 main_~j~0))) (or (and .cse0 (<= .cse1 main_~j~0) .cse2 .cse3) (and (= .cse4 main_~k~0) .cse2 .cse5) (and .cse0 .cse3 .cse5)))) [2020-09-24 18:30:45,698 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-24 18:30:45,699 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-24 18:30:45,699 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-24 18:30:45,699 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-24 18:30:45,699 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 18:30:45,699 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-24 18:30:45,699 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-09-24 18:30:45,699 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 18:30:45,699 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 18:30:45,700 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 18:30:45,700 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-24 18:30:45,700 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 18:30:45,700 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:30:45,701 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 18:30:45,701 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 18:30:45,701 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:30:45,701 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 18:30:45,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:30:45 BoogieIcfgContainer [2020-09-24 18:30:45,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:30:45,736 INFO L168 Benchmark]: Toolchain (without parser) took 11889.43 ms. Allocated memory was 139.5 MB in the beginning and 303.6 MB in the end (delta: 164.1 MB). Free memory was 103.4 MB in the beginning and 155.5 MB in the end (delta: -52.2 MB). Peak memory consumption was 111.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:30:45,737 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:30:45,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.63 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:30:45,739 INFO L168 Benchmark]: Boogie Preprocessor took 109.11 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 181.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:30:45,742 INFO L168 Benchmark]: RCFGBuilder took 410.02 ms. Allocated memory is still 201.9 MB. Free memory was 181.8 MB in the beginning and 165.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:30:45,746 INFO L168 Benchmark]: TraceAbstraction took 11050.88 ms. Allocated memory was 201.9 MB in the beginning and 303.6 MB in the end (delta: 101.7 MB). Free memory was 164.4 MB in the beginning and 155.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:30:45,755 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.63 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.11 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 181.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.02 ms. Allocated memory is still 201.9 MB. Free memory was 181.8 MB in the beginning and 165.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11050.88 ms. Allocated memory was 201.9 MB in the beginning and 303.6 MB in the end (delta: 101.7 MB). Free memory was 164.4 MB in the beginning and 155.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n <= k && k <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((n <= k && k <= n) && i * 2 == j) || ((2 * i + 1 <= j && n <= k) && k <= n) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((i * 2 == k && j + 1 <= n) && i * 2 == j) || (((2 * i + 1 <= j && j + 1 <= n) && 2 * i + 1 <= k) && k <= n)) || ((2 * i + 1 <= k && k <= n) && i * 2 == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.4s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 513 SDtfs, 259 SDslu, 1864 SDs, 0 SdLazy, 960 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 166 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 32 PreInvPairs, 56 NumberOfFragments, 230 HoareAnnotationTreeSize, 32 FomulaSimplifications, 3333 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 12 FomulaSimplificationsInter, 236 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 361 ConstructedInterpolants, 0 QuantifiedInterpolants, 37249 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 82/99 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...