/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/loops/sum01_bug02_sum01_bug02_base.case.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:29:22,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:29:22,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:29:22,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:29:22,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:29:22,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:29:22,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:29:22,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:29:22,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:29:22,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:29:22,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:29:22,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:29:22,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:29:22,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:29:22,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:29:22,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:29:22,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:29:22,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:29:22,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:29:22,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:29:22,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:29:22,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:29:22,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:29:22,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:29:22,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:29:22,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:29:22,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:29:22,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:29:22,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:29:22,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:29:22,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:29:22,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:29:22,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:29:22,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:29:22,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:29:22,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:29:22,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:29:22,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:29:22,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:29:22,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:29:22,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:29:22,842 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 18:29:22,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:29:22,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:29:22,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:29:22,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:29:22,888 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:29:22,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:29:22,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:29:22,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:29:22,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:29:22,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:29:22,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:29:22,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:29:22,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:29:22,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:29:22,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:29:22,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:29:22,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:29:22,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:29:22,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:29:22,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:29:22,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:29:22,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:29:22,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:29:22,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:29:22,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:29:22,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:29:22,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:29:22,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:29:22,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:29:22,894 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 18:29:23,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:29:23,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:29:23,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:29:23,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:29:23,394 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:29:23,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2020-09-24 18:29:23,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91c009695/bdd126d398a44035930b3786ba8c5638/FLAGd4d167dda [2020-09-24 18:29:24,030 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:29:24,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2020-09-24 18:29:24,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91c009695/bdd126d398a44035930b3786ba8c5638/FLAGd4d167dda [2020-09-24 18:29:24,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91c009695/bdd126d398a44035930b3786ba8c5638 [2020-09-24 18:29:24,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:29:24,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:29:24,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:29:24,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:29:24,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:29:24,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:29:24" (1/1) ... [2020-09-24 18:29:24,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a48022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24, skipping insertion in model container [2020-09-24 18:29:24,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:29:24" (1/1) ... [2020-09-24 18:29:24,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:29:24,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:29:24,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:29:24,754 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:29:24,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:29:24,786 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:29:24,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24 WrapperNode [2020-09-24 18:29:24,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:29:24,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:29:24,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:29:24,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:29:24,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24" (1/1) ... [2020-09-24 18:29:24,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24" (1/1) ... [2020-09-24 18:29:24,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24" (1/1) ... [2020-09-24 18:29:24,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24" (1/1) ... [2020-09-24 18:29:24,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24" (1/1) ... [2020-09-24 18:29:24,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24" (1/1) ... [2020-09-24 18:29:24,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24" (1/1) ... [2020-09-24 18:29:24,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:29:24,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:29:24,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:29:24,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:29:24,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24" (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 18:29:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:29:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:29:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:29:24,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:29:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:29:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:29:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 18:29:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:29:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:29:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:29:25,197 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:29:25,197 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:29:25,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:29:25 BoogieIcfgContainer [2020-09-24 18:29:25,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:29:25,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:29:25,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:29:25,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:29:25,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:29:24" (1/3) ... [2020-09-24 18:29:25,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1325a303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:29:25, skipping insertion in model container [2020-09-24 18:29:25,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:24" (2/3) ... [2020-09-24 18:29:25,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1325a303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:29:25, skipping insertion in model container [2020-09-24 18:29:25,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:29:25" (3/3) ... [2020-09-24 18:29:25,214 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2020-09-24 18:29:25,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:29:25,243 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:29:25,294 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:29:25,340 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:29:25,340 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:29:25,340 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:29:25,341 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:29:25,341 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:29:25,341 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:29:25,341 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:29:25,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:29:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-24 18:29:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 18:29:25,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:25,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:29:25,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:25,376 INFO L82 PathProgramCache]: Analyzing trace with hash -290415040, now seen corresponding path program 1 times [2020-09-24 18:29:25,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:25,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11443265] [2020-09-24 18:29:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:25,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:25,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:29:25,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:29:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 18:29:25,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:25,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:25,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:29:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:29:25,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:25,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:25,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:29:25,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:25,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:29:25,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:25,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:25,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:25,766 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 18:29:25,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11443265] [2020-09-24 18:29:25,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:25,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 18:29:25,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400348668] [2020-09-24 18:29:25,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 18:29:25,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:25,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 18:29:25,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 18:29:25,797 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-09-24 18:29:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:25,822 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-09-24 18:29:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 18:29:25,824 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-09-24 18:29:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:25,833 INFO L225 Difference]: With dead ends: 38 [2020-09-24 18:29:25,833 INFO L226 Difference]: Without dead ends: 21 [2020-09-24 18:29:25,837 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 18:29:25,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-24 18:29:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-24 18:29:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-24 18:29:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-09-24 18:29:25,879 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2020-09-24 18:29:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:25,880 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-09-24 18:29:25,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 18:29:25,880 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-09-24 18:29:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 18:29:25,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:25,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:29:25,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:29:25,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:25,882 INFO L82 PathProgramCache]: Analyzing trace with hash -304267855, now seen corresponding path program 1 times [2020-09-24 18:29:25,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:25,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006047591] [2020-09-24 18:29:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:25,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:26,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:26,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:29:26,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 18:29:26,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:29:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:29:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:29:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:26,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:26,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:29:26,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:26,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:29:26,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:26,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:26,146 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 18:29:26,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006047591] [2020-09-24 18:29:26,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:26,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:29:26,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377348243] [2020-09-24 18:29:26,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:29:26,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:26,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:29:26,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:29:26,152 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-09-24 18:29:26,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:26,200 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-09-24 18:29:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:29:26,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-24 18:29:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:26,202 INFO L225 Difference]: With dead ends: 28 [2020-09-24 18:29:26,203 INFO L226 Difference]: Without dead ends: 23 [2020-09-24 18:29:26,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:29:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-24 18:29:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-09-24 18:29:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 18:29:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 18:29:26,211 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-09-24 18:29:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:26,211 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 18:29:26,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:29:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 18:29:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 18:29:26,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:26,217 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 18:29:26,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:29:26,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:26,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:26,218 INFO L82 PathProgramCache]: Analyzing trace with hash -887516915, now seen corresponding path program 1 times [2020-09-24 18:29:26,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:26,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660679255] [2020-09-24 18:29:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:29:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-24 18:29:26,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:29:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:29:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:29:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:26,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:26,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:26,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:29:26,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:26,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:29:26,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:26,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:26,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:26,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:26,737 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 18:29:26,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660679255] [2020-09-24 18:29:26,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:29:26,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:29:26,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505665647] [2020-09-24 18:29:26,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:29:26,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:26,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:29:26,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:29:26,743 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2020-09-24 18:29:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:27,130 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-09-24 18:29:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:29:27,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-09-24 18:29:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:27,132 INFO L225 Difference]: With dead ends: 34 [2020-09-24 18:29:27,133 INFO L226 Difference]: Without dead ends: 29 [2020-09-24 18:29:27,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:29:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-24 18:29:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-09-24 18:29:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 18:29:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-24 18:29:27,140 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-09-24 18:29:27,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:27,141 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-24 18:29:27,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:29:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-24 18:29:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 18:29:27,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:27,142 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 18:29:27,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:29:27,143 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:27,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:27,144 INFO L82 PathProgramCache]: Analyzing trace with hash -507920327, now seen corresponding path program 1 times [2020-09-24 18:29:27,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:27,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487623762] [2020-09-24 18:29:27,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:27,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:27,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:29:27,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:27,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:29:27,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:29:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:29:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:29:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:27,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:27,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:29:27,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:27,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:29:27,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:27,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:27,218 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 18:29:27,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487623762] [2020-09-24 18:29:27,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:27,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:29:27,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206757083] [2020-09-24 18:29:27,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:29:27,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:27,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:29:27,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:29:27,222 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2020-09-24 18:29:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:27,244 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-09-24 18:29:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:29:27,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-24 18:29:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:27,246 INFO L225 Difference]: With dead ends: 40 [2020-09-24 18:29:27,246 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 18:29:27,247 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 18:29:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 18:29:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 18:29:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 18:29:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-24 18:29:27,253 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2020-09-24 18:29:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:27,253 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-24 18:29:27,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:29:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-24 18:29:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 18:29:27,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:27,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:29:27,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:29:27,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:27,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:27,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1934159721, now seen corresponding path program 2 times [2020-09-24 18:29:27,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:27,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271552970] [2020-09-24 18:29:27,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:27,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:27,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:27,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:29:27,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-24 18:29:27,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:29:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:29:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:29:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:27,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:27,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:29:27,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:27,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:29:27,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:27,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:27,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:29:27,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271552970] [2020-09-24 18:29:27,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:29:27,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 18:29:27,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206571698] [2020-09-24 18:29:27,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 18:29:27,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:27,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 18:29:27,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:29:27,949 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2020-09-24 18:29:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:28,408 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-09-24 18:29:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 18:29:28,409 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-09-24 18:29:28,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:28,411 INFO L225 Difference]: With dead ends: 41 [2020-09-24 18:29:28,412 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 18:29:28,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:29:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 18:29:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-24 18:29:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 18:29:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-09-24 18:29:28,423 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 26 [2020-09-24 18:29:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:28,423 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-09-24 18:29:28,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 18:29:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-09-24 18:29:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 18:29:28,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:28,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:29:28,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:29:28,428 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:28,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1064709469, now seen corresponding path program 1 times [2020-09-24 18:29:28,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:28,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332277339] [2020-09-24 18:29:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:28,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:28,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:28,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:29:28,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 18:29:28,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:29:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:29:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:29:28,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:28,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:28,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:28,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:28,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:29:28,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:29:28,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:28,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:29:28,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332277339] [2020-09-24 18:29:28,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:29:28,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:29:28,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622810076] [2020-09-24 18:29:28,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:29:28,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:28,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:29:28,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:29:28,566 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 5 states. [2020-09-24 18:29:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:28,625 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-09-24 18:29:28,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:29:28,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 18:29:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:28,626 INFO L225 Difference]: With dead ends: 46 [2020-09-24 18:29:28,627 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 18:29:28,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:29:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 18:29:28,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 18:29:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 18:29:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 18:29:28,633 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 27 [2020-09-24 18:29:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:28,633 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 18:29:28,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:29:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 18:29:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 18:29:28,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:28,635 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:29:28,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:29:28,635 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:28,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2001266491, now seen corresponding path program 3 times [2020-09-24 18:29:28,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:28,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217582445] [2020-09-24 18:29:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:28,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:28,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 18:29:28,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-24 18:29:28,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:29:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:29:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:29:28,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:29,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:29,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:29:29,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:29,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:29:29,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:29,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:29,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:29,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:29,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 18:29:29,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217582445] [2020-09-24 18:29:29,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:29:29,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 18:29:29,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050446905] [2020-09-24 18:29:29,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:29:29,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:29,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:29:29,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:29:29,221 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 18:29:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:29,553 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-09-24 18:29:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:29:29,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-09-24 18:29:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:29,557 INFO L225 Difference]: With dead ends: 46 [2020-09-24 18:29:29,557 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 18:29:29,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-09-24 18:29:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 18:29:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-24 18:29:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 18:29:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-09-24 18:29:29,566 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 32 [2020-09-24 18:29:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:29,567 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-09-24 18:29:29,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:29:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-09-24 18:29:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 18:29:29,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:29,568 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:29:29,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:29:29,569 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:29,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:29,569 INFO L82 PathProgramCache]: Analyzing trace with hash -674418815, now seen corresponding path program 2 times [2020-09-24 18:29:29,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:29,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925983877] [2020-09-24 18:29:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:29,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:29,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:29,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 18:29:29,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:29,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 18:29:29,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:29:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:29:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:29:29,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:29:29,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:29:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:29:29,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925983877] [2020-09-24 18:29:29,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:29:29,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:29:29,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440248092] [2020-09-24 18:29:29,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:29:29,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:29,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:29:29,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:29:29,756 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 7 states. [2020-09-24 18:29:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:29,835 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-09-24 18:29:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:29:29,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 18:29:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:29,836 INFO L225 Difference]: With dead ends: 56 [2020-09-24 18:29:29,837 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 18:29:29,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:29:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 18:29:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 18:29:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:29:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-24 18:29:29,848 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 33 [2020-09-24 18:29:29,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:29,850 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-24 18:29:29,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:29:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-24 18:29:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 18:29:29,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:29,853 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:29:29,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:29:29,853 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:29,854 INFO L82 PathProgramCache]: Analyzing trace with hash -809826651, now seen corresponding path program 3 times [2020-09-24 18:29:29,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:29,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528235954] [2020-09-24 18:29:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:29:29,877 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:29:29,878 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:29:29,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:29:29,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:29:29 BoogieIcfgContainer [2020-09-24 18:29:29,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:29:29,919 INFO L168 Benchmark]: Toolchain (without parser) took 5493.56 ms. Allocated memory was 146.3 MB in the beginning and 247.5 MB in the end (delta: 101.2 MB). Free memory was 102.3 MB in the beginning and 162.7 MB in the end (delta: -60.4 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:29,920 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:29:29,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.14 ms. Allocated memory is still 146.3 MB. Free memory was 101.7 MB in the beginning and 92.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:29,923 INFO L168 Benchmark]: Boogie Preprocessor took 126.81 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.4 MB in the beginning and 181.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:29,924 INFO L168 Benchmark]: RCFGBuilder took 288.37 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:29,928 INFO L168 Benchmark]: TraceAbstraction took 4705.96 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 168.9 MB in the beginning and 162.7 MB in the end (delta: 6.2 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:29,939 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.14 ms. Allocated memory is still 146.3 MB. Free memory was 101.7 MB in the beginning and 92.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.81 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.4 MB in the beginning and 181.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.37 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4705.96 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 168.9 MB in the beginning and 162.7 MB in the end (delta: 6.2 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND TRUE i==4 [L15] sn=-10 [L13] i++ [L13] COND FALSE !(i<=n) [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 145 SDtfs, 48 SDslu, 468 SDs, 0 SdLazy, 421 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 21754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 23/60 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 incorrect! Received shutdown request...