/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=1000 --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-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:35:01,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:35:01,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:35:01,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:35:01,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:35:01,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:35:01,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:35:01,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:35:01,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:35:01,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:35:01,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:35:01,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:35:01,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:35:01,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:35:01,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:35:01,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:35:01,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:35:01,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:35:01,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:35:01,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:35:01,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:35:01,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:35:01,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:35:01,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:35:01,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:35:01,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:35:01,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:35:01,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:35:01,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:35:01,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:35:01,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:35:01,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:35:01,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:35:01,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:35:01,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:35:01,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:35:01,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:35:01,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:35:01,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:35:01,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:35:01,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:35:01,191 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 19:35:01,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:35:01,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:35:01,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:35:01,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:35:01,235 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:35:01,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:35:01,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:35:01,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:35:01,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:35:01,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:35:01,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:35:01,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:35:01,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:35:01,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:35:01,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:35:01,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:35:01,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:35:01,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:35:01,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:35:01,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:35:01,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:35:01,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:35:01,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:35:01,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:35:01,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:35:01,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:35:01,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:35:01,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:35:01,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:35:01,242 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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:35:01,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:35:01,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:35:01,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:35:01,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:35:01,729 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:35:01,730 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-24 19:35:01,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e2b3b452/45753b10b0e34453b42ba970e17ae650/FLAG1f794206f [2020-09-24 19:35:02,353 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:35:02,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-24 19:35:02,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e2b3b452/45753b10b0e34453b42ba970e17ae650/FLAG1f794206f [2020-09-24 19:35:02,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e2b3b452/45753b10b0e34453b42ba970e17ae650 [2020-09-24 19:35:02,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:35:02,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:35:02,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:02,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:35:02,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:35:02,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:02" (1/1) ... [2020-09-24 19:35:02,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:02, skipping insertion in model container [2020-09-24 19:35:02,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:02" (1/1) ... [2020-09-24 19:35:02,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:35:02,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:35:03,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:03,016 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:35:03,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:03,051 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:35:03,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03 WrapperNode [2020-09-24 19:35:03,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:03,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:35:03,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:35:03,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:35:03,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03" (1/1) ... [2020-09-24 19:35:03,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03" (1/1) ... [2020-09-24 19:35:03,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03" (1/1) ... [2020-09-24 19:35:03,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03" (1/1) ... [2020-09-24 19:35:03,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03" (1/1) ... [2020-09-24 19:35:03,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03" (1/1) ... [2020-09-24 19:35:03,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03" (1/1) ... [2020-09-24 19:35:03,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:35:03,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:35:03,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:35:03,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:35:03,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03" (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 19:35:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:35:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:35:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 19:35:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:35:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:35:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:35:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:35:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 19:35:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:35:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:35:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:35:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:35:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:35:03,508 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:35:03,508 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:35:03,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:03 BoogieIcfgContainer [2020-09-24 19:35:03,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:35:03,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:35:03,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:35:03,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:35:03,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:35:02" (1/3) ... [2020-09-24 19:35:03,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9483cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:03, skipping insertion in model container [2020-09-24 19:35:03,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:03" (2/3) ... [2020-09-24 19:35:03,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9483cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:03, skipping insertion in model container [2020-09-24 19:35:03,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:03" (3/3) ... [2020-09-24 19:35:03,539 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-09-24 19:35:03,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:35:03,573 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:35:03,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:35:03,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:35:03,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:35:03,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:35:03,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:35:03,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:35:03,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:35:03,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:35:03,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:35:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-24 19:35:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 19:35:03,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:03,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:03,655 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:03,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1007675669, now seen corresponding path program 1 times [2020-09-24 19:35:03,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:03,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124960889] [2020-09-24 19:35:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:03,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:03,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:03,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 19:35:03,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 19:35:03,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:03,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:35:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:03,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:35:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:03,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:03,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:03,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:35:03,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:03,976 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 19:35:03,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124960889] [2020-09-24 19:35:03,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:03,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 19:35:03,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37044350] [2020-09-24 19:35:03,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 19:35:03,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:04,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 19:35:04,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 19:35:04,010 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-09-24 19:35:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:04,042 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-09-24 19:35:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 19:35:04,044 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-09-24 19:35:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:04,057 INFO L225 Difference]: With dead ends: 42 [2020-09-24 19:35:04,057 INFO L226 Difference]: Without dead ends: 24 [2020-09-24 19:35:04,062 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 19:35:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-24 19:35:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-24 19:35:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-24 19:35:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-09-24 19:35:04,113 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2020-09-24 19:35:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:04,113 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-09-24 19:35:04,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 19:35:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-09-24 19:35:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 19:35:04,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:04,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:04,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:35:04,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:04,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:04,116 INFO L82 PathProgramCache]: Analyzing trace with hash 993822854, now seen corresponding path program 1 times [2020-09-24 19:35:04,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:04,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480341537] [2020-09-24 19:35:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:04,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:04,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 19:35:04,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:04,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-24 19:35:04,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:35:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:35:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:35:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 19:35:04,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:04,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:04,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:04,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:04,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:04,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:35:04,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:04,413 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 19:35:04,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480341537] [2020-09-24 19:35:04,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:04,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:35:04,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076000692] [2020-09-24 19:35:04,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:35:04,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:04,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:35:04,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:35:04,418 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-09-24 19:35:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:04,483 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-09-24 19:35:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:35:04,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-24 19:35:04,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:04,486 INFO L225 Difference]: With dead ends: 39 [2020-09-24 19:35:04,486 INFO L226 Difference]: Without dead ends: 37 [2020-09-24 19:35:04,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:35:04,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-24 19:35:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-09-24 19:35:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 19:35:04,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-24 19:35:04,497 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2020-09-24 19:35:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:04,498 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-24 19:35:04,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:35:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-24 19:35:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 19:35:04,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:04,500 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:04,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:35:04,501 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:04,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1988212296, now seen corresponding path program 1 times [2020-09-24 19:35:04,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:04,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275592830] [2020-09-24 19:35:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:04,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:04,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:04,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:35:04,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:04,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-24 19:35:04,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:35:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:35:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:35:04,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:04,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:04,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:04,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:04,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:35:04,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:04,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:35:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:04,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:04,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:04,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:35:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:35:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:35:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:35:04,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:04,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275592830] [2020-09-24 19:35:04,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:04,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:35:04,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609121734] [2020-09-24 19:35:04,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:35:04,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:04,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:35:04,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:35:04,765 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-09-24 19:35:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:04,812 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-09-24 19:35:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:35:04,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-24 19:35:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:04,815 INFO L225 Difference]: With dead ends: 43 [2020-09-24 19:35:04,815 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 19:35:04,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:35:04,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 19:35:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-09-24 19:35:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-24 19:35:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-09-24 19:35:04,823 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2020-09-24 19:35:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:04,823 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-09-24 19:35:04,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:35:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-09-24 19:35:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 19:35:04,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:04,825 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] [2020-09-24 19:35:04,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:35:04,826 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2096508511, now seen corresponding path program 1 times [2020-09-24 19:35:04,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:04,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851091744] [2020-09-24 19:35:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:04,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:05,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:05,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:35:05,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:05,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-24 19:35:05,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:35:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:35:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:35:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:05,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:05,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:05,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:05,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:05,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:05,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:35:05,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:05,142 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 19:35:05,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851091744] [2020-09-24 19:35:05,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:05,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:35:05,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280402491] [2020-09-24 19:35:05,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:35:05,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:05,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:35:05,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:35:05,145 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-09-24 19:35:05,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:05,224 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-09-24 19:35:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:35:05,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-24 19:35:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:05,226 INFO L225 Difference]: With dead ends: 52 [2020-09-24 19:35:05,226 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 19:35:05,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:35:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 19:35:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-09-24 19:35:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 19:35:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-24 19:35:05,234 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2020-09-24 19:35:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:05,234 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-24 19:35:05,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:35:05,235 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-24 19:35:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 19:35:05,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:05,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:05,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:35:05,236 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:05,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:05,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1151527866, now seen corresponding path program 1 times [2020-09-24 19:35:05,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:05,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145168908] [2020-09-24 19:35:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:05,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:05,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:35:05,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-24 19:35:05,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:35:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 19:35:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:35:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:05,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:05,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:05,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:05,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:35:05,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 19:35:05,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145168908] [2020-09-24 19:35:05,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:05,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:35:05,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433504864] [2020-09-24 19:35:05,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:35:05,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:05,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:35:05,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:35:05,584 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-24 19:35:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:05,683 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-09-24 19:35:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:35:05,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-24 19:35:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:05,686 INFO L225 Difference]: With dead ends: 56 [2020-09-24 19:35:05,686 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 19:35:05,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:35:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 19:35:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2020-09-24 19:35:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 19:35:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-24 19:35:05,695 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 25 [2020-09-24 19:35:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:05,695 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-24 19:35:05,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:35:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-24 19:35:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:35:05,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:05,697 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, 1] [2020-09-24 19:35:05,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:35:05,697 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:05,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:05,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2086501752, now seen corresponding path program 1 times [2020-09-24 19:35:05,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:05,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457053987] [2020-09-24 19:35:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:05,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:05,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:05,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:35:05,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:35:05,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:35:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:35:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:35:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:05,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:05,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:05,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:05,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:05,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:35:05,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:05,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:05,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:35:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:05,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:05,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:35:05,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:35:05,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:35:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:35:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:35:05,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457053987] [2020-09-24 19:35:05,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:05,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:35:05,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257700986] [2020-09-24 19:35:05,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:35:05,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:05,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:35:05,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:35:05,901 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 6 states. [2020-09-24 19:35:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:05,983 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-09-24 19:35:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:35:05,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-24 19:35:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:05,985 INFO L225 Difference]: With dead ends: 54 [2020-09-24 19:35:05,985 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 19:35:05,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:35:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 19:35:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-09-24 19:35:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 19:35:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-09-24 19:35:05,992 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 30 [2020-09-24 19:35:05,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:05,993 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-09-24 19:35:05,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:35:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-09-24 19:35:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:35:05,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:05,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:05,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:35:05,995 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:05,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:05,995 INFO L82 PathProgramCache]: Analyzing trace with hash -3902483, now seen corresponding path program 2 times [2020-09-24 19:35:05,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:05,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371910114] [2020-09-24 19:35:05,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:06,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:06,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:35:06,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:35:06,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:35:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:35:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:35:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:06,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:06,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:06,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:35:06,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 19:35:06,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371910114] [2020-09-24 19:35:06,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:06,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:35:06,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927669386] [2020-09-24 19:35:06,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:35:06,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:06,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:35:06,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:35:06,157 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 7 states. [2020-09-24 19:35:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:06,236 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 19:35:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:35:06,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-24 19:35:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:06,237 INFO L225 Difference]: With dead ends: 37 [2020-09-24 19:35:06,237 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:35:06,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:35:06,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:35:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:35:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:35:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:35:06,240 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-24 19:35:06,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:06,240 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:35:06,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:35:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:35:06,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:35:06,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:35:06,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:35:06,496 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 19:35:06,496 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:35:06,497 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:35:06,497 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:35:06,497 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:35:06,497 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:35:06,497 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 19:35:06,497 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 19:35:06,497 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 19:35:06,498 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 19:35:06,498 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 19:35:06,498 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-24 19:35:06,498 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) [2020-09-24 19:35:06,498 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 19:35:06,498 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 19:35:06,499 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= main_~m~0 0)) (.cse1 (<= 1 main_~x~0))) (or (and .cse0 (= main_~x~0 0)) (and .cse1 .cse0) (and .cse1 (<= 1 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))))) [2020-09-24 19:35:06,499 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 22) the Hoare annotation is: (let ((.cse1 (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)))) (or (let ((.cse0 (+ main_~m~0 1))) (and (<= main_~x~0 .cse0) .cse1 (<= main_~n~0 .cse0))) (and (<= 1 main_~x~0) (<= 1 main_~m~0) .cse1) (and (<= 0 main_~m~0) (<= main_~m~0 0)))) [2020-09-24 19:35:06,499 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-09-24 19:35:06,499 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-24 19:35:06,499 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 19:35:06,499 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 19:35:06,500 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2020-09-24 19:35:06,500 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 19:35:06,500 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 19:35:06,500 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 19:35:06,500 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 19:35:06,500 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 19:35:06,500 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 20) no Hoare annotation was computed. [2020-09-24 19:35:06,501 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 19:35:06,501 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 19:35:06,501 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 19:35:06,501 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 19:35:06,501 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 19:35:06,501 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 19:35:06,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:35:06 BoogieIcfgContainer [2020-09-24 19:35:06,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:35:06,527 INFO L168 Benchmark]: Toolchain (without parser) took 3807.19 ms. Allocated memory was 138.9 MB in the beginning and 247.5 MB in the end (delta: 108.5 MB). Free memory was 102.1 MB in the beginning and 217.1 MB in the end (delta: -115.0 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:06,528 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 19:35:06,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.51 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:06,530 INFO L168 Benchmark]: Boogie Preprocessor took 113.46 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 181.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:06,531 INFO L168 Benchmark]: RCFGBuilder took 348.49 ms. Allocated memory is still 201.9 MB. Free memory was 181.4 MB in the beginning and 167.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:06,532 INFO L168 Benchmark]: TraceAbstraction took 2996.34 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 166.9 MB in the beginning and 217.1 MB in the end (delta: -50.2 MB). Peak memory consumption was 118.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:06,536 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.51 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.46 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 181.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.49 ms. Allocated memory is still 201.9 MB. Free memory was 181.4 MB in the beginning and 167.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2996.34 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 166.9 MB in the beginning and 217.1 MB in the end (delta: -50.2 MB). Peak memory consumption was 118.7 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: 17]: Loop Invariant Derived loop invariant: ((m == 0 && x == 0) || (1 <= x && m == 0)) || ((1 <= x && 1 <= m) && (n <= 0 || m < n)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 186 SDtfs, 85 SDslu, 489 SDs, 0 SdLazy, 181 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 7 MinimizatonAttempts, 35 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 26 NumberOfFragments, 81 HoareAnnotationTreeSize, 16 FomulaSimplifications, 92 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 7493 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 21/33 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...