/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:32:51,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:32:51,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:32:51,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:32:51,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:32:51,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:32:51,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:32:52,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:32:52,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:32:52,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:32:52,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:32:52,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:32:52,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:32:52,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:32:52,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:32:52,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:32:52,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:32:52,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:32:52,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:32:52,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:32:52,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:32:52,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:32:52,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:32:52,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:32:52,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:32:52,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:32:52,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:32:52,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:32:52,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:32:52,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:32:52,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:32:52,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:32:52,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:32:52,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:32:52,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:32:52,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:32:52,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:32:52,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:32:52,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:32:52,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:32:52,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:32:52,051 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 [2020-09-21 11:32:52,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:32:52,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:32:52,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:32:52,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:32:52,078 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:32:52,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:32:52,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:32:52,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:32:52,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:32:52,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:32:52,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:32:52,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:32:52,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:32:52,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:32:52,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:32:52,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:32:52,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:32:52,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:32:52,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:32:52,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:32:52,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:32:52,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:32:52,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:32:52,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:32:52,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:32:52,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:32:52,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:32:52,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:32:52,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:32:52,083 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:32:52,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:32:52,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:32:52,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:32:52,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:32:52,560 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:32:52,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-09-21 11:32:52,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f9d9018d/7a307398569a46668ed4747e63e3a5d4/FLAG039d69db2 [2020-09-21 11:32:53,200 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:32:53,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-09-21 11:32:53,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f9d9018d/7a307398569a46668ed4747e63e3a5d4/FLAG039d69db2 [2020-09-21 11:32:53,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f9d9018d/7a307398569a46668ed4747e63e3a5d4 [2020-09-21 11:32:53,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:32:53,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:32:53,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:32:53,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:32:53,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:32:53,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:53" (1/1) ... [2020-09-21 11:32:53,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53, skipping insertion in model container [2020-09-21 11:32:53,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:53" (1/1) ... [2020-09-21 11:32:53,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:32:53,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:32:53,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:32:53,843 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:32:53,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:32:53,879 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:32:53,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53 WrapperNode [2020-09-21 11:32:53,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:32:53,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:32:53,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:32:53,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:32:53,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53" (1/1) ... [2020-09-21 11:32:53,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53" (1/1) ... [2020-09-21 11:32:53,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53" (1/1) ... [2020-09-21 11:32:53,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53" (1/1) ... [2020-09-21 11:32:53,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53" (1/1) ... [2020-09-21 11:32:53,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53" (1/1) ... [2020-09-21 11:32:53,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53" (1/1) ... [2020-09-21 11:32:53,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:32:53,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:32:53,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:32:53,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:32:54,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53" (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 [2020-09-21 11:32:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:32:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:32:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:32:54,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:32:54,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:32:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:32:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:32:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:32:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:32:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:32:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:32:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:32:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:32:54,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:32:54,316 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:32:54,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:54 BoogieIcfgContainer [2020-09-21 11:32:54,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:32:54,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:32:54,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:32:54,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:32:54,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:32:53" (1/3) ... [2020-09-21 11:32:54,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a53c4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:54, skipping insertion in model container [2020-09-21 11:32:54,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:53" (2/3) ... [2020-09-21 11:32:54,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a53c4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:54, skipping insertion in model container [2020-09-21 11:32:54,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:54" (3/3) ... [2020-09-21 11:32:54,330 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-09-21 11:32:54,342 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:32:54,353 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:32:54,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:32:54,407 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:32:54,408 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:32:54,408 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:32:54,408 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:32:54,408 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:32:54,408 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:32:54,408 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:32:54,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:32:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-09-21 11:32:54,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 11:32:54,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:54,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:54,439 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:54,446 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-09-21 11:32:54,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:54,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997655722] [2020-09-21 11:32:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:54,585 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:54,586 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:54,586 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:54,586 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:54,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:32:54,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:32:54,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:32:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:54,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:54,640 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:54,641 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:54,641 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:54,641 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:54,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:54,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:54,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:32:54,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997655722] [2020-09-21 11:32:54,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:32:54,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:32:54,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444776490] [2020-09-21 11:32:54,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:32:54,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:54,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:32:54,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:32:54,680 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-09-21 11:32:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:54,747 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-09-21 11:32:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:32:54,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-21 11:32:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:54,763 INFO L225 Difference]: With dead ends: 35 [2020-09-21 11:32:54,763 INFO L226 Difference]: Without dead ends: 16 [2020-09-21 11:32:54,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:32:54,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-09-21 11:32:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-09-21 11:32:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-21 11:32:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-09-21 11:32:54,835 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-09-21 11:32:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:54,835 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-09-21 11:32:54,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:32:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-09-21 11:32:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 11:32:54,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:54,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:54,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:32:54,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:54,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:54,839 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-09-21 11:32:54,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:54,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040404996] [2020-09-21 11:32:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:55,013 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:32:55,014 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:55,014 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:55,015 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:55,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:32:55,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-21 11:32:55,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:32:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:32:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:32:55,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:55,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:55,276 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:55,277 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:55,277 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:55,277 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:55,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:55,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:32:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:55,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:32:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:32:55,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040404996] [2020-09-21 11:32:55,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:32:55,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:32:55,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067429395] [2020-09-21 11:32:55,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:32:55,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:55,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:32:55,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:32:55,299 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-09-21 11:32:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:59,623 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-09-21 11:32:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:32:59,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-21 11:32:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:59,627 INFO L225 Difference]: With dead ends: 25 [2020-09-21 11:32:59,627 INFO L226 Difference]: Without dead ends: 20 [2020-09-21 11:32:59,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:32:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-09-21 11:32:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2020-09-21 11:32:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-21 11:32:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-09-21 11:32:59,636 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-09-21 11:32:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:59,636 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-09-21 11:32:59,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:32:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-09-21 11:32:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 11:32:59,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:59,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:59,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:32:59,638 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:59,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:59,639 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-09-21 11:32:59,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:59,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698893084] [2020-09-21 11:32:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:59,869 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:32:59,869 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -7 [2020-09-21 11:32:59,870 FATAL L256 erpolLogProxyWrapper]: Difference in width: 7 [2020-09-21 11:32:59,870 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:59,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:32:59,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:59,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-21 11:32:59,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:32:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:32:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:32:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:33:00,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:00,179 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:00,180 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:00,180 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:00,180 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:00,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:33:00,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:00,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:00,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:33:00,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698893084] [2020-09-21 11:33:00,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:33:00,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:33:00,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52305831] [2020-09-21 11:33:00,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:33:00,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:00,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:33:00,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:33:00,189 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 8 states. [2020-09-21 11:33:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:00,407 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-09-21 11:33:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:33:00,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-09-21 11:33:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:00,408 INFO L225 Difference]: With dead ends: 34 [2020-09-21 11:33:00,409 INFO L226 Difference]: Without dead ends: 22 [2020-09-21 11:33:00,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:33:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-21 11:33:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-09-21 11:33:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-21 11:33:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-09-21 11:33:00,416 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2020-09-21 11:33:00,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:00,416 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-09-21 11:33:00,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:33:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-09-21 11:33:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:33:00,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:00,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:00,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:33:00,418 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:00,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:00,418 INFO L82 PathProgramCache]: Analyzing trace with hash 396453102, now seen corresponding path program 2 times [2020-09-21 11:33:00,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:00,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987623969] [2020-09-21 11:33:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:00,473 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:33:00,474 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -7 [2020-09-21 11:33:00,474 FATAL L256 erpolLogProxyWrapper]: Difference in width: 7 [2020-09-21 11:33:00,474 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:00,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:33:00,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:33:00,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:33:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:33:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:33:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:00,631 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:00,632 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:00,632 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:00,632 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:00,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:33:00,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:00,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:33:00,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987623969] [2020-09-21 11:33:00,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:33:00,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:33:00,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974296094] [2020-09-21 11:33:00,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:33:00,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:00,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:33:00,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:33:00,641 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-09-21 11:33:00,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:00,781 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-09-21 11:33:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:33:00,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-21 11:33:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:00,783 INFO L225 Difference]: With dead ends: 32 [2020-09-21 11:33:00,784 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 11:33:00,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:33:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 11:33:00,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-09-21 11:33:00,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 11:33:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-09-21 11:33:00,791 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-09-21 11:33:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:00,792 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-09-21 11:33:00,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:33:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-09-21 11:33:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:33:00,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:00,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:00,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:33:00,794 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:00,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:00,795 INFO L82 PathProgramCache]: Analyzing trace with hash -291244452, now seen corresponding path program 1 times [2020-09-21 11:33:00,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:00,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244394271] [2020-09-21 11:33:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:00,835 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:33:00,835 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:00,836 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:00,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:00,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:33:00,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:33:00,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:33:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:33:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:33:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:00,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:00,950 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:00,950 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:00,950 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:00,951 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:00,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:33:00,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:00,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:00,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:00,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:00,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:00,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:33:00,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244394271] [2020-09-21 11:33:00,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:33:00,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:33:00,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451787729] [2020-09-21 11:33:00,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:33:00,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:00,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:33:00,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:33:00,958 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-09-21 11:33:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:01,059 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-09-21 11:33:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:33:01,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-21 11:33:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:01,060 INFO L225 Difference]: With dead ends: 32 [2020-09-21 11:33:01,061 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 11:33:01,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:33:01,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 11:33:01,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-09-21 11:33:01,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-21 11:33:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-09-21 11:33:01,068 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-09-21 11:33:01,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:01,068 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-09-21 11:33:01,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:33:01,068 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-09-21 11:33:01,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:33:01,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:01,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:01,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:33:01,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:01,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:01,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1483762910, now seen corresponding path program 1 times [2020-09-21 11:33:01,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:01,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771973589] [2020-09-21 11:33:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,182 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:33:01,183 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -7 [2020-09-21 11:33:01,183 FATAL L256 erpolLogProxyWrapper]: Difference in width: 7 [2020-09-21 11:33:01,183 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:33:01,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 11:33:01,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:33:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:33:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:33:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,480 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:01,480 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:01,481 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:01,481 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:33:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:01,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:33:01,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771973589] [2020-09-21 11:33:01,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:33:01,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:33:01,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375586649] [2020-09-21 11:33:01,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:33:01,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:01,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:33:01,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:33:01,489 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 10 states. [2020-09-21 11:33:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:01,786 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-09-21 11:33:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:33:01,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-09-21 11:33:01,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:01,787 INFO L225 Difference]: With dead ends: 31 [2020-09-21 11:33:01,787 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 11:33:01,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:33:01,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 11:33:01,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-09-21 11:33:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 11:33:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-09-21 11:33:01,794 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2020-09-21 11:33:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:01,794 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-09-21 11:33:01,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:33:01,794 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-09-21 11:33:01,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:33:01,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:01,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:01,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:33:01,796 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:01,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:01,796 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 2 times [2020-09-21 11:33:01,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:01,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594633328] [2020-09-21 11:33:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:33:01,849 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:01,849 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:01,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:33:01,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:33:01,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:33:01,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:33:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:33:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:01,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:01,987 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:01,987 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:01,987 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:01,987 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:01,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:33:01,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:01,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:01,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:01,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:01,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:01,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:33:01,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594633328] [2020-09-21 11:33:01,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:33:01,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:33:01,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564760282] [2020-09-21 11:33:01,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:33:01,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:01,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:33:01,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:33:01,994 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-09-21 11:33:02,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:02,144 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-09-21 11:33:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:33:02,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-09-21 11:33:02,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:02,145 INFO L225 Difference]: With dead ends: 35 [2020-09-21 11:33:02,146 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 11:33:02,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:33:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 11:33:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-09-21 11:33:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-21 11:33:02,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-21 11:33:02,151 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-09-21 11:33:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:02,152 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-21 11:33:02,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:33:02,152 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-21 11:33:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:33:02,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:02,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:02,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:33:02,153 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:02,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-09-21 11:33:02,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:02,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596924241] [2020-09-21 11:33:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:02,278 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:33:02,279 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:02,279 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:02,279 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:02,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:33:02,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-21 11:33:02,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:02,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:33:02,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:33:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:33:02,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:02,738 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:02,738 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:02,738 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:02,738 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:02,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:33:02,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:02,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:33:02,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596924241] [2020-09-21 11:33:02,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:33:02,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:33:02,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033060549] [2020-09-21 11:33:02,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:33:02,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:02,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:33:02,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:33:02,748 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 12 states. [2020-09-21 11:33:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:03,083 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-09-21 11:33:03,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:33:03,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-21 11:33:03,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:03,084 INFO L225 Difference]: With dead ends: 37 [2020-09-21 11:33:03,084 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:33:03,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:33:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:33:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:33:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:33:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:33:03,086 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-09-21 11:33:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:03,087 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:33:03,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:33:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:33:03,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:33:03,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:33:03,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:33:03,349 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:33:03,350 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-21 11:33:03,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:33:03,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:33:03,350 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:33:03,350 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:33:03,351 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:33:03,351 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-21 11:33:03,351 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-21 11:33:03,351 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-21 11:33:03,351 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-21 11:33:03,351 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-09-21 11:33:03,351 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-21 11:33:03,352 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-09-21 11:33:03,352 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-21 11:33:03,352 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-09-21 11:33:03,352 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-09-21 11:33:03,352 INFO L268 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2020-09-21 11:33:03,353 INFO L268 CegarLoopResult]: For program point L26-2(lines 24 29) no Hoare annotation was computed. [2020-09-21 11:33:03,353 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 31) the Hoare annotation is: (let ((.cse2 (<= main_~l~0 (+ main_~i~0 main_~j~0 main_~k~0))) (.cse1 (* 2 main_~j~0)) (.cse0 (* main_~j~0 (- 1)))) (or (and (<= (+ (* 2 (div (+ main_~i~0 .cse0 main_~k~0 (- 1)) 2)) .cse1 2) main_~l~0) .cse2) (and .cse2 (<= (+ .cse1 (* 2 (div (+ main_~i~0 .cse0 (* main_~k~0 (- 1))) 2)) (* 2 main_~k~0) 1) main_~l~0)))) [2020-09-21 11:33:03,354 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 31) the Hoare annotation is: (let ((.cse2 (div (+ main_~i~0 main_~j~0 main_~k~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse5 (* 4294967296 .cse2))) (let ((.cse0 (+ main_~l~0 .cse5)) (.cse4 (+ main_~i~0 main_~j~0 main_~k~0 .cse1))) (or (and (< .cse0 (+ main_~i~0 main_~j~0 main_~k~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= .cse4 .cse0)) (and (<= .cse0 .cse4) (< 0 (+ .cse2 1)) (< .cse4 (+ main_~l~0 .cse5 1))))))) [2020-09-21 11:33:03,355 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-21 11:33:03,355 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-21 11:33:03,355 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-21 11:33:03,355 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-21 11:33:03,355 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-21 11:33:03,355 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-21 11:33:03,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:33:03 BoogieIcfgContainer [2020-09-21 11:33:03,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:33:03,402 INFO L168 Benchmark]: Toolchain (without parser) took 9843.57 ms. Allocated memory was 146.8 MB in the beginning and 246.4 MB in the end (delta: 99.6 MB). Free memory was 103.5 MB in the beginning and 134.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,403 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:33:03,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.56 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,405 INFO L168 Benchmark]: Boogie Preprocessor took 118.14 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 92.7 MB in the beginning and 183.3 MB in the end (delta: -90.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,406 INFO L168 Benchmark]: RCFGBuilder took 321.20 ms. Allocated memory is still 203.4 MB. Free memory was 183.3 MB in the beginning and 168.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,410 INFO L168 Benchmark]: TraceAbstraction took 9071.99 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 168.2 MB in the beginning and 134.2 MB in the end (delta: 34.0 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:03,421 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.56 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.14 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 92.7 MB in the beginning and 183.3 MB in the end (delta: -90.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.20 ms. Allocated memory is still 203.4 MB. Free memory was 183.3 MB in the beginning and 168.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9071.99 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 168.2 MB in the beginning and 134.2 MB in the end (delta: 34.0 MB). Peak memory consumption was 77.0 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: (2 * ((i + j * -1 + k + -1) / 2) + 2 * j + 2 <= l && l <= i + j + k) || (l <= i + j + k && 2 * j + 2 * ((i + j * -1 + k * -1) / 2) + 2 * k + 1 <= l) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.6s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 159 SDslu, 200 SDs, 0 SdLazy, 437 SolverSat, 70 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 17 PreInvPairs, 27 NumberOfFragments, 169 HoareAnnotationTreeSize, 17 FomulaSimplifications, 290 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 236 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 25272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 11/41 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...