/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-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:30:57,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:30:57,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:30:57,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:30:57,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:30:57,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:30:57,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:30:57,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:30:57,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:30:57,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:30:57,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:30:57,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:30:57,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:30:57,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:30:57,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:30:57,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:30:57,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:30:57,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:30:57,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:30:57,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:30:57,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:30:57,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:30:57,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:30:57,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:30:57,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:30:57,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:30:57,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:30:57,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:30:57,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:30:57,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:30:57,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:30:57,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:30:57,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:30:57,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:30:57,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:30:57,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:30:57,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:30:57,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:30:57,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:30:57,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:30:57,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:30:57,951 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 18:30:57,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:30:57,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:30:57,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:30:57,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:30:57,980 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:30:57,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:30:57,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:30:57,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:30:57,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:30:57,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:30:57,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:30:57,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:30:57,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:30:57,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:30:57,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:30:57,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:30:57,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:30:57,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:30:57,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:30:57,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:30:57,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:30:57,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:30:57,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:30:57,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:30:57,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:30:57,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:30:57,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:30:57,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:30:57,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:30:57,988 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 18:30:58,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:30:58,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:30:58,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:30:58,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:30:58,483 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:30:58,485 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2020-09-24 18:30:58,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f74a73ab/8f7211b9c9274bbb8c6ca31cc3ef87ef/FLAG167e99d61 [2020-09-24 18:30:59,165 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:30:59,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/half.i [2020-09-24 18:30:59,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f74a73ab/8f7211b9c9274bbb8c6ca31cc3ef87ef/FLAG167e99d61 [2020-09-24 18:30:59,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f74a73ab/8f7211b9c9274bbb8c6ca31cc3ef87ef [2020-09-24 18:30:59,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:30:59,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:30:59,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:59,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:30:59,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:30:59,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:59" (1/1) ... [2020-09-24 18:30:59,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c2a635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59, skipping insertion in model container [2020-09-24 18:30:59,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:59" (1/1) ... [2020-09-24 18:30:59,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:30:59,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:30:59,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:59,813 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:30:59,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:59,854 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:30:59,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59 WrapperNode [2020-09-24 18:30:59,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:59,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:30:59,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:30:59,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:30:59,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59" (1/1) ... [2020-09-24 18:30:59,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59" (1/1) ... [2020-09-24 18:30:59,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59" (1/1) ... [2020-09-24 18:30:59,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59" (1/1) ... [2020-09-24 18:30:59,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59" (1/1) ... [2020-09-24 18:30:59,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59" (1/1) ... [2020-09-24 18:30:59,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59" (1/1) ... [2020-09-24 18:30:59,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:30:59,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:30:59,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:30:59,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:30:59,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59" (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 18:31:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:31:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:31:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:31:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:31:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:31:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:31:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:31:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:31:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:31:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:31:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:31:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:31:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:31:00,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:31:00,299 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:31:00,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:00 BoogieIcfgContainer [2020-09-24 18:31:00,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:31:00,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:31:00,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:31:00,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:31:00,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:30:59" (1/3) ... [2020-09-24 18:31:00,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130d242f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:00, skipping insertion in model container [2020-09-24 18:31:00,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:59" (2/3) ... [2020-09-24 18:31:00,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130d242f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:00, skipping insertion in model container [2020-09-24 18:31:00,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:00" (3/3) ... [2020-09-24 18:31:00,328 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2020-09-24 18:31:00,364 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:31:00,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:31:00,436 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:31:00,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:31:00,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:31:00,471 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:31:00,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:31:00,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:31:00,471 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:31:00,471 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:31:00,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:31:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-09-24 18:31:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:31:00,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:00,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:00,505 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:00,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:00,511 INFO L82 PathProgramCache]: Analyzing trace with hash 789700725, now seen corresponding path program 1 times [2020-09-24 18:31:00,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:00,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962554141] [2020-09-24 18:31:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:00,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:31:00,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 18:31:00,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:31:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:31:00,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:00,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:00,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:00,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:00,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:31:00,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:00,754 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 18:31:00,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962554141] [2020-09-24 18:31:00,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:00,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 18:31:00,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51015125] [2020-09-24 18:31:00,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 18:31:00,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:00,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 18:31:00,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 18:31:00,786 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-09-24 18:31:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:00,816 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-09-24 18:31:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 18:31:00,818 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-09-24 18:31:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:00,830 INFO L225 Difference]: With dead ends: 44 [2020-09-24 18:31:00,830 INFO L226 Difference]: Without dead ends: 24 [2020-09-24 18:31:00,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 18:31:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-24 18:31:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-24 18:31:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-24 18:31:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-09-24 18:31:00,882 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 16 [2020-09-24 18:31:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:00,883 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-09-24 18:31:00,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 18:31:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-09-24 18:31:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:31:00,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:00,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:00,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:31:00,885 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:00,886 INFO L82 PathProgramCache]: Analyzing trace with hash 774924389, now seen corresponding path program 1 times [2020-09-24 18:31:00,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:00,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857775337] [2020-09-24 18:31:00,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:01,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:01,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:31:01,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:01,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 18:31:01,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:31:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:31:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:31:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:01,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:01,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:01,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:01,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:01,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:01,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:31:01,274 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 18:31:01,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857775337] [2020-09-24 18:31:01,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:01,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:31:01,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691434596] [2020-09-24 18:31:01,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:31:01,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:01,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:31:01,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:31:01,283 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-09-24 18:31:01,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:01,442 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-09-24 18:31:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:31:01,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-24 18:31:01,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:01,446 INFO L225 Difference]: With dead ends: 43 [2020-09-24 18:31:01,447 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 18:31:01,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:31:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 18:31:01,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2020-09-24 18:31:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-24 18:31:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-24 18:31:01,456 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 16 [2020-09-24 18:31:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:01,457 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-24 18:31:01,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:31:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-24 18:31:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 18:31:01,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:01,458 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] [2020-09-24 18:31:01,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:31:01,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:01,459 INFO L82 PathProgramCache]: Analyzing trace with hash 775379929, now seen corresponding path program 1 times [2020-09-24 18:31:01,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:01,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505665647] [2020-09-24 18:31:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:01,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:01,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:31:01,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:31:01,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-24 18:31:01,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:31:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:31:01,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:31:01,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:01,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:01,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:01,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:31:01,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505665647] [2020-09-24 18:31:01,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:01,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:31:01,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730845445] [2020-09-24 18:31:01,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:31:01,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:01,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:31:01,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:31:01,981 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 3 states. [2020-09-24 18:31:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:02,008 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-09-24 18:31:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:31:02,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-24 18:31:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:02,010 INFO L225 Difference]: With dead ends: 44 [2020-09-24 18:31:02,010 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 18:31:02,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:31:02,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 18:31:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-09-24 18:31:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 18:31:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 18:31:02,017 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21 [2020-09-24 18:31:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:02,018 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 18:31:02,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:31:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 18:31:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 18:31:02,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:02,019 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] [2020-09-24 18:31:02,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:31:02,019 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:02,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1973531292, now seen corresponding path program 1 times [2020-09-24 18:31:02,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:02,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973614590] [2020-09-24 18:31:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:02,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:02,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:31:02,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:31:02,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 18:31:02,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:31:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:31:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:31:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:02,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:02,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:02,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:02,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:02,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:02,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:02,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:02,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:31:02,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973614590] [2020-09-24 18:31:02,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:02,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:31:02,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003158003] [2020-09-24 18:31:02,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:31:02,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:02,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:31:02,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:31:02,294 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states. [2020-09-24 18:31:02,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:02,411 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-09-24 18:31:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:31:02,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 18:31:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:02,413 INFO L225 Difference]: With dead ends: 46 [2020-09-24 18:31:02,413 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 18:31:02,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:31:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 18:31:02,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2020-09-24 18:31:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 18:31:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-09-24 18:31:02,421 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 24 [2020-09-24 18:31:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:02,421 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-09-24 18:31:02,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:31:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-09-24 18:31:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 18:31:02,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:02,423 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:31:02,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:31:02,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:02,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1981883390, now seen corresponding path program 1 times [2020-09-24 18:31:02,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:02,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348385414] [2020-09-24 18:31:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:02,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:02,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:02,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:31:02,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:31:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-24 18:31:02,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:31:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:31:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:31:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:03,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:03,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:03,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:03,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:03,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:03,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:31:03,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348385414] [2020-09-24 18:31:03,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:03,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 18:31:03,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969505591] [2020-09-24 18:31:03,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 18:31:03,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:03,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 18:31:03,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:31:03,271 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 14 states. [2020-09-24 18:31:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:03,610 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-09-24 18:31:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 18:31:03,611 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2020-09-24 18:31:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:03,612 INFO L225 Difference]: With dead ends: 56 [2020-09-24 18:31:03,612 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 18:31:03,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-09-24 18:31:03,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 18:31:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-09-24 18:31:03,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 18:31:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 18:31:03,621 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 29 [2020-09-24 18:31:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:03,621 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 18:31:03,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 18:31:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 18:31:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 18:31:03,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:03,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:03,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:31:03,623 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1157374763, now seen corresponding path program 2 times [2020-09-24 18:31:03,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:03,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297769728] [2020-09-24 18:31:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:03,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:03,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:03,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:03,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:03,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:31:04,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:31:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-09-24 18:31:04,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:31:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:31:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:31:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:04,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:04,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:04,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 18:31:04,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297769728] [2020-09-24 18:31:04,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:04,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:31:04,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390861456] [2020-09-24 18:31:04,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:31:04,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:04,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:31:04,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:31:04,579 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2020-09-24 18:31:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:04,647 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2020-09-24 18:31:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:31:04,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-24 18:31:04,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:04,649 INFO L225 Difference]: With dead ends: 66 [2020-09-24 18:31:04,649 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 18:31:04,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:31:04,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 18:31:04,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-09-24 18:31:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 18:31:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-09-24 18:31:04,657 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 37 [2020-09-24 18:31:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:04,657 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-09-24 18:31:04,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:31:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-09-24 18:31:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 18:31:04,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:04,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:04,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:31:04,660 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:04,661 INFO L82 PathProgramCache]: Analyzing trace with hash -282773191, now seen corresponding path program 3 times [2020-09-24 18:31:04,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:04,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949344196] [2020-09-24 18:31:04,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:05,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:05,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:31:05,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:31:05,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-09-24 18:31:05,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:31:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:31:05,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:31:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:05,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:05,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:05,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:05,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:05,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:31:05,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949344196] [2020-09-24 18:31:05,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:05,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:31:05,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468543268] [2020-09-24 18:31:05,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:31:05,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:05,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:31:05,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:31:05,647 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 5 states. [2020-09-24 18:31:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:05,705 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-09-24 18:31:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:31:05,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-24 18:31:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:05,707 INFO L225 Difference]: With dead ends: 49 [2020-09-24 18:31:05,707 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 18:31:05,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:31:05,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 18:31:05,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-24 18:31:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 18:31:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-09-24 18:31:05,714 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 37 [2020-09-24 18:31:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:05,715 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-09-24 18:31:05,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:31:05,715 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-09-24 18:31:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 18:31:05,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:05,717 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:05,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:31:05,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:05,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1065873285, now seen corresponding path program 4 times [2020-09-24 18:31:05,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:05,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224741225] [2020-09-24 18:31:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:05,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:05,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:07,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:07,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 18:31:07,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:31:07,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1428 [2020-09-24 18:31:07,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:07,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:31:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:31:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:31:07,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:07,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:07,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:07,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 18:31:07,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224741225] [2020-09-24 18:31:07,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:07,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 18:31:07,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642527244] [2020-09-24 18:31:07,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 18:31:07,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:07,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 18:31:07,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:31:07,573 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 15 states. [2020-09-24 18:31:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:08,090 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-09-24 18:31:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 18:31:08,090 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-09-24 18:31:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:08,091 INFO L225 Difference]: With dead ends: 65 [2020-09-24 18:31:08,091 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:31:08,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2020-09-24 18:31:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:31:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:31:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:31:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:31:08,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-09-24 18:31:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:08,097 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:31:08,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 18:31:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:31:08,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:31:08,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:31:08,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:31:08,262 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 18:31:08,263 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:31:08,263 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:31:08,263 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:31:08,263 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:31:08,263 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:31:08,263 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:31:08,264 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:31:08,264 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 18:31:08,264 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 18:31:08,264 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:31:08,264 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 25) no Hoare annotation was computed. [2020-09-24 18:31:08,264 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 18:31:08,264 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-24 18:31:08,265 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 18:31:08,265 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 18:31:08,265 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 18:31:08,265 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 25) no Hoare annotation was computed. [2020-09-24 18:31:08,265 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true [2020-09-24 18:31:08,265 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 18:31:08,265 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 18:31:08,266 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 18:31:08,266 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-24 18:31:08,266 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 18:31:08,266 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 18:31:08,266 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-09-24 18:31:08,266 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 18:31:08,266 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 18:31:08,266 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-24 18:31:08,267 INFO L264 CegarLoopResult]: At program point L18-6(lines 18 22) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (let ((.cse2 (<= .cse0 main_~i~0)) (.cse3 (<= main_~i~0 .cse0))) (or (let ((.cse1 (+ main_~i~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 2 main_~k~0)))) (and .cse2 .cse3 (= main_~n~0 0)) (and .cse2 .cse3 (< main_~n~0 (+ main_~k~0 1)))))) [2020-09-24 18:31:08,267 INFO L264 CegarLoopResult]: At program point L18-7(lines 18 22) the Hoare annotation is: (let ((.cse3 (* 2 main_~n~0))) (let ((.cse0 (<= main_~i~0 .cse3)) (.cse1 (<= main_~k~0 main_~n~0)) (.cse2 (< main_~n~0 (+ main_~k~0 1)))) (or (and (<= 0 main_~n~0) (<= main_~n~0 0) .cse0 .cse1) (and (< 0 main_~k~0) .cse1 .cse2) (and (<= .cse3 main_~i~0) .cse0 .cse1 .cse2)))) [2020-09-24 18:31:08,267 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 18:31:08,268 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:31:08,268 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 18:31:08,268 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 18:31:08,268 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:31:08,268 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 18:31:08,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:31:08 BoogieIcfgContainer [2020-09-24 18:31:08,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:31:08,298 INFO L168 Benchmark]: Toolchain (without parser) took 8757.90 ms. Allocated memory was 138.4 MB in the beginning and 288.4 MB in the end (delta: 149.9 MB). Free memory was 101.4 MB in the beginning and 155.2 MB in the end (delta: -53.7 MB). Peak memory consumption was 96.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:08,299 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:31:08,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.17 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 91.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:08,301 INFO L168 Benchmark]: Boogie Preprocessor took 121.97 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:08,302 INFO L168 Benchmark]: RCFGBuilder took 326.73 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 165.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:08,303 INFO L168 Benchmark]: TraceAbstraction took 7988.39 ms. Allocated memory was 200.8 MB in the beginning and 288.4 MB in the end (delta: 87.6 MB). Free memory was 165.2 MB in the beginning and 155.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 97.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:08,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.17 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 91.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.97 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 326.73 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 165.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7988.39 ms. Allocated memory was 200.8 MB in the beginning and 288.4 MB in the end (delta: 87.6 MB). Free memory was 165.2 MB in the beginning and 155.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 97.6 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: 18]: Loop Invariant Derived loop invariant: (((2 * n <= i + 1 && i + 1 <= 2 * n) && i + 1 <= 2 * k) || ((2 * n <= i && i <= 2 * n) && n == 0)) || ((2 * n <= i && i <= 2 * n) && n < k + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 118 SDslu, 452 SDs, 0 SdLazy, 456 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 30 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 23 NumberOfFragments, 105 HoareAnnotationTreeSize, 15 FomulaSimplifications, 81 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 36066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 52/88 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...