/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum04-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:20:33,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:20:33,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:20:33,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:20:33,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:20:33,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:20:33,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:20:33,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:20:33,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:20:33,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:20:33,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:20:33,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:20:33,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:20:33,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:20:33,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:20:33,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:20:33,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:20:33,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:20:33,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:20:33,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:20:33,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:20:33,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:20:33,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:20:33,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:20:33,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 17:20:33,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:20:33,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:20:33,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:20:33,592 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 17:20:33,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:20:33,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:20:33,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:20:33,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:20:33,623 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:20:33,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:20:33,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:20:33,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:20:33,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:20:33,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:20:33,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:20:33,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:20:33,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:20:33,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:20:33,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:20:33,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:20:33,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:20:33,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:20:33,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:20:33,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:20:33,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:20:33,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:20:33,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:20:33,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:20:33,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:20:33,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:20:33,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:20:33,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:20:33,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:20:33,628 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;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;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;log-additional-information=true; [2020-09-24 17:20:34,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:20:34,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:20:34,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:20:34,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:20:34,123 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:20:34,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-2.i [2020-09-24 17:20:34,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/823bb6140/99def67f840c45f4937682928ff3586f/FLAG0209bf8b8 [2020-09-24 17:20:34,801 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:20:34,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum04-2.i [2020-09-24 17:20:34,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/823bb6140/99def67f840c45f4937682928ff3586f/FLAG0209bf8b8 [2020-09-24 17:20:35,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/823bb6140/99def67f840c45f4937682928ff3586f [2020-09-24 17:20:35,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:20:35,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:20:35,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:20:35,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:20:35,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:20:35,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:20:35" (1/1) ... [2020-09-24 17:20:35,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e8547d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35, skipping insertion in model container [2020-09-24 17:20:35,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:20:35" (1/1) ... [2020-09-24 17:20:35,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:20:35,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:20:35,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:20:35,421 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:20:35,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:20:35,461 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:20:35,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35 WrapperNode [2020-09-24 17:20:35,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:20:35,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:20:35,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:20:35,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:20:35,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35" (1/1) ... [2020-09-24 17:20:35,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35" (1/1) ... [2020-09-24 17:20:35,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35" (1/1) ... [2020-09-24 17:20:35,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35" (1/1) ... [2020-09-24 17:20:35,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35" (1/1) ... [2020-09-24 17:20:35,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35" (1/1) ... [2020-09-24 17:20:35,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35" (1/1) ... [2020-09-24 17:20:35,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:20:35,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:20:35,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:20:35,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:20:35,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35" (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 17:20:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:20:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:20:35,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:20:35,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:20:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:20:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:20:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:20:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:20:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:20:35,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:20:35,862 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:20:35,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:20:35 BoogieIcfgContainer [2020-09-24 17:20:35,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:20:35,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:20:35,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:20:35,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:20:35,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:20:35" (1/3) ... [2020-09-24 17:20:35,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333b2878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:20:35, skipping insertion in model container [2020-09-24 17:20:35,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:35" (2/3) ... [2020-09-24 17:20:35,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333b2878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:20:35, skipping insertion in model container [2020-09-24 17:20:35,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:20:35" (3/3) ... [2020-09-24 17:20:35,894 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2020-09-24 17:20:35,943 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:20:35,962 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:20:35,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:20:36,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:20:36,033 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:20:36,033 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:20:36,033 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:20:36,033 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:20:36,033 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:20:36,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:20:36,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:20:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-09-24 17:20:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 17:20:36,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:36,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:36,071 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:36,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:36,079 INFO L82 PathProgramCache]: Analyzing trace with hash 129992897, now seen corresponding path program 1 times [2020-09-24 17:20:36,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:36,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914128841] [2020-09-24 17:20:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:36,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:36,337 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:36,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:20:36,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:20:36,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 17:20:36,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:20:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:20:36,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:36,377 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:36,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:20:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:36,386 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 17:20:36,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914128841] [2020-09-24 17:20:36,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:20:36,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 17:20:36,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649850216] [2020-09-24 17:20:36,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 17:20:36,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:36,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 17:20:36,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 17:20:36,420 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-09-24 17:20:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:36,453 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-09-24 17:20:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 17:20:36,455 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-24 17:20:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:36,467 INFO L225 Difference]: With dead ends: 34 [2020-09-24 17:20:36,467 INFO L226 Difference]: Without dead ends: 17 [2020-09-24 17:20:36,472 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 17:20:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-09-24 17:20:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-09-24 17:20:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-24 17:20:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-09-24 17:20:36,525 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2020-09-24 17:20:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:36,526 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-09-24 17:20:36,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 17:20:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-09-24 17:20:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 17:20:36,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:36,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:36,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:20:36,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash 121681208, now seen corresponding path program 1 times [2020-09-24 17:20:36,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:36,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120889908] [2020-09-24 17:20:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:36,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:36,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:36,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 17:20:36,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:20:36,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-24 17:20:36,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:20:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 17:20:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:20:36,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:36,742 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:36,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:36,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:36,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:20:36,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:36,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:36,748 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 17:20:36,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120889908] [2020-09-24 17:20:36,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:20:36,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:20:36,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234862503] [2020-09-24 17:20:36,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:20:36,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:36,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:20:36,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:20:36,754 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-09-24 17:20:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:36,799 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-09-24 17:20:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:20:36,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-24 17:20:36,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:36,802 INFO L225 Difference]: With dead ends: 24 [2020-09-24 17:20:36,802 INFO L226 Difference]: Without dead ends: 19 [2020-09-24 17:20:36,803 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 17:20:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-24 17:20:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-09-24 17:20:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-24 17:20:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-09-24 17:20:36,809 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-09-24 17:20:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:36,810 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-09-24 17:20:36,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:20:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-09-24 17:20:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 17:20:36,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:36,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:36,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:20:36,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash -917865259, now seen corresponding path program 1 times [2020-09-24 17:20:36,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:36,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692261366] [2020-09-24 17:20:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:36,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:36,899 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:36,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 17:20:36,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:36,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 17:20:36,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:20:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:36,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:20:36,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:36,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:36,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:36,970 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:36,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:36,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:20:36,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:36,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:36,980 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 17:20:36,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692261366] [2020-09-24 17:20:36,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:36,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 17:20:36,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717465723] [2020-09-24 17:20:36,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:20:36,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:36,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:20:36,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:20:36,986 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-09-24 17:20:37,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:37,059 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-09-24 17:20:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:20:37,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 17:20:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:37,061 INFO L225 Difference]: With dead ends: 31 [2020-09-24 17:20:37,061 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 17:20:37,062 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 17:20:37,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 17:20:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-09-24 17:20:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-24 17:20:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-24 17:20:37,076 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-09-24 17:20:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:37,077 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-24 17:20:37,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:20:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-24 17:20:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 17:20:37,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:37,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:37,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:20:37,079 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:37,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2060587176, now seen corresponding path program 2 times [2020-09-24 17:20:37,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:37,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459196500] [2020-09-24 17:20:37,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:37,220 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:37,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 17:20:37,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:37,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 17:20:37,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:20:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:20:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:37,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:37,290 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:37,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:37,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:37,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:20:37,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:37,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459196500] [2020-09-24 17:20:37,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:37,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:20:37,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021793616] [2020-09-24 17:20:37,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:20:37,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:37,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:20:37,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:20:37,298 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-09-24 17:20:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:37,388 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-24 17:20:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:20:37,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-09-24 17:20:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:37,390 INFO L225 Difference]: With dead ends: 36 [2020-09-24 17:20:37,390 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 17:20:37,391 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 17:20:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 17:20:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-09-24 17:20:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 17:20:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-09-24 17:20:37,398 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2020-09-24 17:20:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:37,399 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-09-24 17:20:37,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:20:37,399 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-09-24 17:20:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 17:20:37,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:37,400 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:37,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:20:37,401 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:37,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:37,418 INFO L82 PathProgramCache]: Analyzing trace with hash 657233589, now seen corresponding path program 3 times [2020-09-24 17:20:37,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:37,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153008506] [2020-09-24 17:20:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:37,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:37,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 17:20:37,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 17:20:37,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:20:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 17:20:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:37,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:37,647 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:37,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:37,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:20:37,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:37,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:37,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153008506] [2020-09-24 17:20:37,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:37,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:20:37,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453962333] [2020-09-24 17:20:37,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:20:37,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:37,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:20:37,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:20:37,655 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2020-09-24 17:20:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:37,802 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-09-24 17:20:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:20:37,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-24 17:20:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:37,804 INFO L225 Difference]: With dead ends: 41 [2020-09-24 17:20:37,804 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 17:20:37,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:20:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 17:20:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-09-24 17:20:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 17:20:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-09-24 17:20:37,818 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 27 [2020-09-24 17:20:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:37,819 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-09-24 17:20:37,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:20:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-09-24 17:20:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 17:20:37,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:37,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:37,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:20:37,823 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:37,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:37,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1410268808, now seen corresponding path program 4 times [2020-09-24 17:20:37,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:37,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613613018] [2020-09-24 17:20:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:38,062 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:38,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:20:38,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 17:20:38,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:20:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 17:20:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:38,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:38,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:38,170 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:38,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:38,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:38,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:20:38,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:38,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:38,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613613018] [2020-09-24 17:20:38,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:38,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:20:38,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74942029] [2020-09-24 17:20:38,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:20:38,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:38,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:20:38,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:20:38,185 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 11 states. [2020-09-24 17:20:38,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:38,360 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-24 17:20:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 17:20:38,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-09-24 17:20:38,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:38,362 INFO L225 Difference]: With dead ends: 46 [2020-09-24 17:20:38,362 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 17:20:38,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:20:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 17:20:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-09-24 17:20:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 17:20:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-09-24 17:20:38,377 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 32 [2020-09-24 17:20:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:38,377 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-09-24 17:20:38,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:20:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-09-24 17:20:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 17:20:38,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:38,380 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:38,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:20:38,380 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:38,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1340090219, now seen corresponding path program 5 times [2020-09-24 17:20:38,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:38,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838690306] [2020-09-24 17:20:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:38,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:38,626 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:38,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 17:20:38,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-24 17:20:38,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:20:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 17:20:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:38,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:38,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:38,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:38,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:38,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:20:38,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:38,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:38,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:38,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:38,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838690306] [2020-09-24 17:20:38,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:38,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:20:38,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782500621] [2020-09-24 17:20:38,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:20:38,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:38,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:20:38,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:20:38,772 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 13 states. [2020-09-24 17:20:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:38,979 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-09-24 17:20:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:20:38,979 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-09-24 17:20:38,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:38,980 INFO L225 Difference]: With dead ends: 51 [2020-09-24 17:20:38,981 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 17:20:38,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2020-09-24 17:20:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 17:20:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-09-24 17:20:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 17:20:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-09-24 17:20:38,988 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 37 [2020-09-24 17:20:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:38,989 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-09-24 17:20:38,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:20:38,989 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-09-24 17:20:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 17:20:38,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:38,990 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:38,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:20:38,991 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:38,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:38,991 INFO L82 PathProgramCache]: Analyzing trace with hash 740027288, now seen corresponding path program 6 times [2020-09-24 17:20:38,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:38,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791835317] [2020-09-24 17:20:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:39,246 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:39,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:20:39,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:39,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 17:20:39,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:20:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:20:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:39,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:39,384 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:39,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:39,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:20:39,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:39,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791835317] [2020-09-24 17:20:39,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:39,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 17:20:39,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280617823] [2020-09-24 17:20:39,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:20:39,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:39,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:20:39,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:20:39,392 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 15 states. [2020-09-24 17:20:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:39,700 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-09-24 17:20:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 17:20:39,701 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-09-24 17:20:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:39,702 INFO L225 Difference]: With dead ends: 56 [2020-09-24 17:20:39,702 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 17:20:39,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2020-09-24 17:20:39,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 17:20:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-09-24 17:20:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 17:20:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2020-09-24 17:20:39,721 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 42 [2020-09-24 17:20:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:39,721 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2020-09-24 17:20:39,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 17:20:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-09-24 17:20:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 17:20:39,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:39,725 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:39,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:20:39,729 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:39,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:39,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1053966965, now seen corresponding path program 7 times [2020-09-24 17:20:39,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:39,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696531882] [2020-09-24 17:20:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:39,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:40,050 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:40,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:20:40,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-24 17:20:40,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:20:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 17:20:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:40,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:40,238 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:40,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:40,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:20:40,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:40,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:40,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696531882] [2020-09-24 17:20:40,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:40,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 17:20:40,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438049541] [2020-09-24 17:20:40,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 17:20:40,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:40,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 17:20:40,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-09-24 17:20:40,246 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 17 states. [2020-09-24 17:20:40,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:40,489 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-09-24 17:20:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 17:20:40,490 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-09-24 17:20:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:40,492 INFO L225 Difference]: With dead ends: 58 [2020-09-24 17:20:40,492 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 17:20:40,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2020-09-24 17:20:40,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 17:20:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 17:20:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 17:20:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-09-24 17:20:40,508 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 47 [2020-09-24 17:20:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:40,508 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-09-24 17:20:40,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 17:20:40,509 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-09-24 17:20:40,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 17:20:40,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:40,514 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:40,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:20:40,514 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:40,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:40,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1480544840, now seen corresponding path program 8 times [2020-09-24 17:20:40,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:40,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679404580] [2020-09-24 17:20:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:40,821 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:40,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:20:40,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-24 17:20:40,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:20:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 17:20:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 17:20:40,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:41,064 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:41,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:41,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:41,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:20:41,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:41,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679404580] [2020-09-24 17:20:41,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:41,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:20:41,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90633583] [2020-09-24 17:20:41,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:20:41,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:41,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:20:41,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:20:41,077 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 13 states. [2020-09-24 17:20:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:41,178 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-09-24 17:20:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:20:41,178 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-24 17:20:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:41,179 INFO L225 Difference]: With dead ends: 64 [2020-09-24 17:20:41,180 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 17:20:41,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:20:41,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 17:20:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-09-24 17:20:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 17:20:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-09-24 17:20:41,192 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 52 [2020-09-24 17:20:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:41,193 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-09-24 17:20:41,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:20:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-09-24 17:20:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 17:20:41,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:41,197 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:41,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:20:41,197 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:41,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1401826219, now seen corresponding path program 9 times [2020-09-24 17:20:41,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:41,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170979057] [2020-09-24 17:20:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:41,568 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:41,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 17:20:41,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-24 17:20:41,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:20:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:20:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:20:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:41,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:41,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:41,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:41,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:20:41,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:41,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:41,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:20:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 160 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:41,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170979057] [2020-09-24 17:20:41,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:20:41,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 17:20:41,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219200750] [2020-09-24 17:20:41,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 17:20:41,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:41,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 17:20:41,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:20:41,787 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 19 states. [2020-09-24 17:20:42,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:42,125 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-09-24 17:20:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 17:20:42,126 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-09-24 17:20:42,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:42,126 INFO L225 Difference]: With dead ends: 58 [2020-09-24 17:20:42,127 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:20:42,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=860, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 17:20:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:20:42,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:20:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:20:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:20:42,130 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-09-24 17:20:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:42,130 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:20:42,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 17:20:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:20:42,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:20:42,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:20:42,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:20:42,347 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-09-24 17:20:42,353 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 17:20:42,353 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:20:42,353 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:20:42,353 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 17:20:42,353 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 17:20:42,353 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:20:42,354 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-24 17:20:42,354 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-24 17:20:42,354 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 17:20:42,354 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 17:20:42,354 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 17) no Hoare annotation was computed. [2020-09-24 17:20:42,354 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 17:20:42,354 INFO L268 CegarLoopResult]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2020-09-24 17:20:42,354 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-24 17:20:42,355 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-24 17:20:42,355 INFO L264 CegarLoopResult]: At program point L13-6(lines 13 15) the Hoare annotation is: (let ((.cse0 (= main_~sn~0 0))) (or (and (<= main_~i~0 4) (<= 6 main_~sn~0) (<= 4 main_~i~0) (<= main_~sn~0 6)) (and (<= 7 main_~i~0) (<= main_~i~0 7) (<= 12 main_~sn~0) (<= main_~sn~0 12)) (and (<= 9 main_~i~0) (or .cse0 (= 16 main_~sn~0))) (and (<= main_~sn~0 4) (<= 3 main_~i~0) (<= main_~i~0 3) (<= 4 main_~sn~0)) (and (<= main_~i~0 6) (<= 10 main_~sn~0) (<= main_~sn~0 10) (<= 6 main_~i~0)) (and (<= 2 main_~i~0) (<= main_~sn~0 2) (<= 2 main_~sn~0) (<= main_~i~0 2)) (and (<= main_~sn~0 8) (<= 5 main_~i~0) (<= main_~i~0 5) (<= 8 main_~sn~0)) (and (<= main_~i~0 8) (<= 8 main_~i~0) (<= main_~sn~0 14) (<= 14 main_~sn~0)) (and .cse0 (= main_~i~0 1)))) [2020-09-24 17:20:42,355 INFO L264 CegarLoopResult]: At program point L13-7(lines 13 15) the Hoare annotation is: (or (= main_~sn~0 0) (= 16 main_~sn~0)) [2020-09-24 17:20:42,355 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-24 17:20:42,356 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-24 17:20:42,356 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 17:20:42,356 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-24 17:20:42,356 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-24 17:20:42,356 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-24 17:20:42,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:20:42 BoogieIcfgContainer [2020-09-24 17:20:42,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:20:42,383 INFO L168 Benchmark]: Toolchain (without parser) took 7244.65 ms. Allocated memory was 139.5 MB in the beginning and 287.8 MB in the end (delta: 148.4 MB). Free memory was 103.0 MB in the beginning and 250.8 MB in the end (delta: -147.8 MB). Peak memory consumption was 154.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:42,384 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-24 17:20:42,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.04 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 93.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:42,386 INFO L168 Benchmark]: Boogie Preprocessor took 110.82 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 182.1 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:42,387 INFO L168 Benchmark]: RCFGBuilder took 295.84 ms. Allocated memory is still 202.4 MB. Free memory was 182.1 MB in the beginning and 170.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:42,388 INFO L168 Benchmark]: TraceAbstraction took 6499.25 ms. Allocated memory was 202.4 MB in the beginning and 287.8 MB in the end (delta: 85.5 MB). Free memory was 169.2 MB in the beginning and 250.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 158.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:42,392 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.04 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 93.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.82 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 182.1 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 295.84 ms. Allocated memory is still 202.4 MB. Free memory was 182.1 MB in the beginning and 170.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6499.25 ms. Allocated memory was 202.4 MB in the beginning and 287.8 MB in the end (delta: 85.5 MB). Free memory was 169.2 MB in the beginning and 250.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 158.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 13]: Loop Invariant Derived loop invariant: ((((((((((i <= 4 && 6 <= sn) && 4 <= i) && sn <= 6) || (((7 <= i && i <= 7) && 12 <= sn) && sn <= 12)) || (9 <= i && (sn == 0 || 16 == sn))) || (((sn <= 4 && 3 <= i) && i <= 3) && 4 <= sn)) || (((i <= 6 && 10 <= sn) && sn <= 10) && 6 <= i)) || (((2 <= i && sn <= 2) && 2 <= sn) && i <= 2)) || (((sn <= 8 && 5 <= i) && i <= 5) && 8 <= sn)) || (((i <= 8 && 8 <= i) && sn <= 14) && 14 <= sn)) || (sn == 0 && i == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 11, TraceHistogramMax: 9, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 202 SDtfs, 129 SDslu, 1093 SDs, 0 SdLazy, 522 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 20 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 17 PreInvPairs, 28 NumberOfFragments, 122 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 346 ConstructedInterpolants, 0 QuantifiedInterpolants, 42108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 160/645 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...