/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:57:01,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:57:01,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:57:01,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 17:57:02,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:57:02,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:57:02,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:57:02,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:57:02,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:57:02,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:57:02,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:57:02,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:57:02,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:57:02,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:57:02,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:57:02,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:57:02,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:57:02,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:57:02,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:57:02,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:57:02,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 17:57:02,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:57:02,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:57:02,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:57:02,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:57:02,147 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:57:02,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:57:02,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:57:02,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:57:02,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:57:02,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:57:02,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:57:02,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:57:02,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:57:02,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:57:02,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:57:02,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:57:02,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:57:02,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:57:02,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:57:02,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:57:02,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:57:02,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:57:02,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:57:02,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:57:02,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:57:02,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:57:02,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:57:02,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:57:02,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:57:02,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:57:02,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:57:02,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:57:02,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:57:02,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:57:02,651 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:57:02,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-23 17:57:02,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0177a70/8dca43bda0cd4956a7d87915edfbb5af/FLAG40a9d062d [2020-10-23 17:57:03,348 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:57:03,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-23 17:57:03,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0177a70/8dca43bda0cd4956a7d87915edfbb5af/FLAG40a9d062d [2020-10-23 17:57:03,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0177a70/8dca43bda0cd4956a7d87915edfbb5af [2020-10-23 17:57:03,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:57:03,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:57:03,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:57:03,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:57:03,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:57:03,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:57:03" (1/1) ... [2020-10-23 17:57:03,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789ac49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:03, skipping insertion in model container [2020-10-23 17:57:03,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:57:03" (1/1) ... [2020-10-23 17:57:03,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:57:03,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:57:03,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:57:03,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:57:03,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:57:04,016 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:57:04,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04 WrapperNode [2020-10-23 17:57:04,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:57:04,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:57:04,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:57:04,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:57:04,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04" (1/1) ... [2020-10-23 17:57:04,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04" (1/1) ... [2020-10-23 17:57:04,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04" (1/1) ... [2020-10-23 17:57:04,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04" (1/1) ... [2020-10-23 17:57:04,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04" (1/1) ... [2020-10-23 17:57:04,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04" (1/1) ... [2020-10-23 17:57:04,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04" (1/1) ... [2020-10-23 17:57:04,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:57:04,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:57:04,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:57:04,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:57:04,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-23 17:57:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:57:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:57:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:57:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-10-23 17:57:04,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:57:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:57:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:57:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:57:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:57:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 17:57:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-10-23 17:57:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:57:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:57:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:57:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:57:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:57:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:57:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:57:04,661 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:57:04,661 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 17:57:04,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:57:04 BoogieIcfgContainer [2020-10-23 17:57:04,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:57:04,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:57:04,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:57:04,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:57:04,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:57:03" (1/3) ... [2020-10-23 17:57:04,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b74e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:57:04, skipping insertion in model container [2020-10-23 17:57:04,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:04" (2/3) ... [2020-10-23 17:57:04,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b74e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:57:04, skipping insertion in model container [2020-10-23 17:57:04,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:57:04" (3/3) ... [2020-10-23 17:57:04,692 INFO L111 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-10-23 17:57:04,706 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:57:04,711 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:57:04,726 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:57:04,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:57:04,756 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:57:04,756 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:57:04,756 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:57:04,756 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:57:04,757 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:57:04,757 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:57:04,757 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:57:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-23 17:57:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-23 17:57:04,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:04,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:04,788 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:04,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:04,796 INFO L82 PathProgramCache]: Analyzing trace with hash 192942640, now seen corresponding path program 1 times [2020-10-23 17:57:04,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:04,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940990122] [2020-10-23 17:57:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:05,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:57:05,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940990122] [2020-10-23 17:57:05,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:57:05,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 17:57:05,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244692056] [2020-10-23 17:57:05,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 17:57:05,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:05,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 17:57:05,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-23 17:57:05,316 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 8 states. [2020-10-23 17:57:06,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:06,154 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2020-10-23 17:57:06,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 17:57:06,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-23 17:57:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:06,168 INFO L225 Difference]: With dead ends: 47 [2020-10-23 17:57:06,168 INFO L226 Difference]: Without dead ends: 27 [2020-10-23 17:57:06,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-23 17:57:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-23 17:57:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-23 17:57:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-23 17:57:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-10-23 17:57:06,227 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2020-10-23 17:57:06,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:06,228 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-10-23 17:57:06,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 17:57:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-10-23 17:57:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 17:57:06,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:06,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:06,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:57:06,232 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:06,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:06,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1691639833, now seen corresponding path program 1 times [2020-10-23 17:57:06,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:06,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838600220] [2020-10-23 17:57:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:06,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:06,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 17:57:06,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838600220] [2020-10-23 17:57:06,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:57:06,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 17:57:06,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072691991] [2020-10-23 17:57:06,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 17:57:06,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:06,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 17:57:06,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 17:57:06,560 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 9 states. [2020-10-23 17:57:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:07,192 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-10-23 17:57:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 17:57:07,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-23 17:57:07,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:07,195 INFO L225 Difference]: With dead ends: 35 [2020-10-23 17:57:07,195 INFO L226 Difference]: Without dead ends: 30 [2020-10-23 17:57:07,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-23 17:57:07,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-23 17:57:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-23 17:57:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-23 17:57:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-23 17:57:07,207 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 24 [2020-10-23 17:57:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:07,208 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-23 17:57:07,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 17:57:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-23 17:57:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 17:57:07,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:07,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:07,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:57:07,210 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash -118590102, now seen corresponding path program 1 times [2020-10-23 17:57:07,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:07,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85097332] [2020-10-23 17:57:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:07,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:07,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 17:57:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 17:57:07,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85097332] [2020-10-23 17:57:07,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120896921] [2020-10-23 17:57:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:07,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-23 17:57:07,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:57:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-23 17:57:07,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:57:07,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2020-10-23 17:57:07,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263175014] [2020-10-23 17:57:07,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 17:57:07,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 17:57:07,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-23 17:57:07,592 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 11 states. [2020-10-23 17:57:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:08,129 INFO L93 Difference]: Finished difference Result 54 states and 81 transitions. [2020-10-23 17:57:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 17:57:08,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-23 17:57:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:08,132 INFO L225 Difference]: With dead ends: 54 [2020-10-23 17:57:08,132 INFO L226 Difference]: Without dead ends: 35 [2020-10-23 17:57:08,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 17:57:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-23 17:57:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-10-23 17:57:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-23 17:57:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-23 17:57:08,145 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 30 [2020-10-23 17:57:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:08,145 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-23 17:57:08,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 17:57:08,146 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-23 17:57:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 17:57:08,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:08,147 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:08,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 17:57:08,361 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:08,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:08,362 INFO L82 PathProgramCache]: Analyzing trace with hash 936683835, now seen corresponding path program 1 times [2020-10-23 17:57:08,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:08,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298289382] [2020-10-23 17:57:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:08,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 17:57:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-23 17:57:08,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298289382] [2020-10-23 17:57:08,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097659429] [2020-10-23 17:57:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:08,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 17:57:08,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:57:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 17:57:08,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:57:08,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2020-10-23 17:57:08,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527755204] [2020-10-23 17:57:08,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 17:57:08,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:08,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 17:57:08,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 17:57:08,802 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 15 states. [2020-10-23 17:57:10,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:10,099 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-10-23 17:57:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 17:57:10,099 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-10-23 17:57:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:10,104 INFO L225 Difference]: With dead ends: 57 [2020-10-23 17:57:10,104 INFO L226 Difference]: Without dead ends: 52 [2020-10-23 17:57:10,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2020-10-23 17:57:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-23 17:57:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-23 17:57:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-23 17:57:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 55 transitions. [2020-10-23 17:57:10,123 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 55 transitions. Word has length 37 [2020-10-23 17:57:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:10,123 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 55 transitions. [2020-10-23 17:57:10,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 17:57:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 55 transitions. [2020-10-23 17:57:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-23 17:57:10,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:10,126 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:10,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:10,340 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:10,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash -561126020, now seen corresponding path program 2 times [2020-10-23 17:57:10,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:10,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875478076] [2020-10-23 17:57:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:10,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:10,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:10,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:10,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:10,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 17:57:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-23 17:57:10,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875478076] [2020-10-23 17:57:10,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104996634] [2020-10-23 17:57:10,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:10,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 17:57:10,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:57:10,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-23 17:57:10,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:57:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-23 17:57:10,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:57:10,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 16 [2020-10-23 17:57:10,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778097567] [2020-10-23 17:57:10,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 17:57:10,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:10,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 17:57:10,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-23 17:57:10,920 INFO L87 Difference]: Start difference. First operand 38 states and 55 transitions. Second operand 16 states. [2020-10-23 17:57:12,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:12,500 INFO L93 Difference]: Finished difference Result 68 states and 119 transitions. [2020-10-23 17:57:12,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 17:57:12,501 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-23 17:57:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:12,504 INFO L225 Difference]: With dead ends: 68 [2020-10-23 17:57:12,505 INFO L226 Difference]: Without dead ends: 63 [2020-10-23 17:57:12,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2020-10-23 17:57:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-23 17:57:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-10-23 17:57:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-23 17:57:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions. [2020-10-23 17:57:12,525 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 44 [2020-10-23 17:57:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:12,526 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 49 transitions. [2020-10-23 17:57:12,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 17:57:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2020-10-23 17:57:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-23 17:57:12,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:12,528 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:12,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:12,743 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:12,744 INFO L82 PathProgramCache]: Analyzing trace with hash 605433576, now seen corresponding path program 3 times [2020-10-23 17:57:12,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:12,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118628053] [2020-10-23 17:57:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:12,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:12,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 17:57:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-23 17:57:12,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118628053] [2020-10-23 17:57:12,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040193472] [2020-10-23 17:57:12,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:12,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-23 17:57:12,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:57:12,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-23 17:57:12,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:57:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-23 17:57:13,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:57:13,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2020-10-23 17:57:13,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904389679] [2020-10-23 17:57:13,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 17:57:13,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:13,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 17:57:13,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-23 17:57:13,230 INFO L87 Difference]: Start difference. First operand 36 states and 49 transitions. Second operand 15 states. [2020-10-23 17:57:14,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:14,505 INFO L93 Difference]: Finished difference Result 84 states and 141 transitions. [2020-10-23 17:57:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 17:57:14,506 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-23 17:57:14,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:14,509 INFO L225 Difference]: With dead ends: 84 [2020-10-23 17:57:14,509 INFO L226 Difference]: Without dead ends: 55 [2020-10-23 17:57:14,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-10-23 17:57:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-23 17:57:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-23 17:57:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-23 17:57:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 83 transitions. [2020-10-23 17:57:14,543 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 83 transitions. Word has length 44 [2020-10-23 17:57:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:14,544 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 83 transitions. [2020-10-23 17:57:14,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 17:57:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 83 transitions. [2020-10-23 17:57:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-23 17:57:14,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:14,549 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:14,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:14,759 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:14,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:14,760 INFO L82 PathProgramCache]: Analyzing trace with hash 928202551, now seen corresponding path program 4 times [2020-10-23 17:57:14,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:14,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134797508] [2020-10-23 17:57:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:57:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-23 17:57:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-23 17:57:14,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134797508] [2020-10-23 17:57:14,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098484039] [2020-10-23 17:57:14,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:14,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 17:57:14,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:57:14,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-23 17:57:14,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:57:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 71 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-23 17:57:15,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:57:15,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2020-10-23 17:57:15,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473950724] [2020-10-23 17:57:15,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 17:57:15,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:15,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 17:57:15,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:57:15,021 INFO L87 Difference]: Start difference. First operand 55 states and 83 transitions. Second operand 7 states. [2020-10-23 17:57:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:15,203 INFO L93 Difference]: Finished difference Result 104 states and 191 transitions. [2020-10-23 17:57:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 17:57:15,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-23 17:57:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:15,205 INFO L225 Difference]: With dead ends: 104 [2020-10-23 17:57:15,205 INFO L226 Difference]: Without dead ends: 58 [2020-10-23 17:57:15,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-23 17:57:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-23 17:57:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-23 17:57:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-23 17:57:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 89 transitions. [2020-10-23 17:57:15,230 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 89 transitions. Word has length 64 [2020-10-23 17:57:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:15,231 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 89 transitions. [2020-10-23 17:57:15,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 17:57:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 89 transitions. [2020-10-23 17:57:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-23 17:57:15,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:57:15,238 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:57:15,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-23 17:57:15,452 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:57:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:57:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505957, now seen corresponding path program 5 times [2020-10-23 17:57:15,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:57:15,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209027194] [2020-10-23 17:57:15,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:57:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:57:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 17:57:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 17:57:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-23 17:57:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:57:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 17:57:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:57:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-23 17:57:15,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209027194] [2020-10-23 17:57:15,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403778825] [2020-10-23 17:57:15,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:15,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-23 17:57:15,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:57:15,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-23 17:57:15,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:57:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 97 proven. 37 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-23 17:57:16,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:57:16,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 18 [2020-10-23 17:57:16,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125641149] [2020-10-23 17:57:16,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-23 17:57:16,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:57:16,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-23 17:57:16,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-23 17:57:16,030 INFO L87 Difference]: Start difference. First operand 58 states and 89 transitions. Second operand 18 states. [2020-10-23 17:57:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:57:17,627 INFO L93 Difference]: Finished difference Result 91 states and 176 transitions. [2020-10-23 17:57:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 17:57:17,628 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 77 [2020-10-23 17:57:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:57:17,628 INFO L225 Difference]: With dead ends: 91 [2020-10-23 17:57:17,628 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 17:57:17,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 17:57:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 17:57:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 17:57:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 17:57:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 17:57:17,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2020-10-23 17:57:17,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:57:17,632 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 17:57:17,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-23 17:57:17,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 17:57:17,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 17:57:17,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:57:17,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 17:57:18,682 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 17 [2020-10-23 17:57:18,797 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 12 [2020-10-23 17:57:18,942 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 17:57:18,942 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 17:57:18,942 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 17:57:18,942 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 17:57:18,943 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:57:18,943 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 17:57:18,943 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:57:18,943 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:57:18,943 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 17:57:18,943 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 17:57:18,943 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:57:18,943 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-23 17:57:18,944 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 28 48) the Hoare annotation is: true [2020-10-23 17:57:18,944 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 28 48) no Hoare annotation was computed. [2020-10-23 17:57:18,944 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: false [2020-10-23 17:57:18,944 INFO L274 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-10-23 17:57:18,944 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 28 48) no Hoare annotation was computed. [2020-10-23 17:57:18,944 INFO L274 CegarLoopResult]: For program point L43(lines 43 47) no Hoare annotation was computed. [2020-10-23 17:57:18,944 INFO L270 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (<= 0 main_~n~0) [2020-10-23 17:57:18,944 INFO L274 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-10-23 17:57:18,944 INFO L274 CegarLoopResult]: For program point L36(lines 36 41) no Hoare annotation was computed. [2020-10-23 17:57:18,945 INFO L274 CegarLoopResult]: For program point ackermannEXIT(lines 17 25) no Hoare annotation was computed. [2020-10-23 17:57:18,945 INFO L270 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2020-10-23 17:57:18,945 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-10-23 17:57:18,945 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2020-10-23 17:57:18,945 INFO L270 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (let ((.cse0 (= ackermann_~n |ackermann_#in~n|)) (.cse1 (<= 1 |ackermann_#in~m|)) (.cse2 (= ackermann_~m |ackermann_#in~m|))) (or (and (<= 3 |ackermann_#t~ret8|) .cse0 .cse1 .cse2) (and (<= |ackermann_#in~m| 1) (<= 2 |ackermann_#t~ret8|) .cse0 .cse1 .cse2))) [2020-10-23 17:57:18,945 INFO L277 CegarLoopResult]: At program point ackermannENTRY(lines 17 25) the Hoare annotation is: true [2020-10-23 17:57:18,945 INFO L274 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-10-23 17:57:18,946 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-23 17:57:18,946 INFO L274 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-10-23 17:57:18,946 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-23 17:57:18,946 INFO L274 CegarLoopResult]: For program point ackermannFINAL(lines 17 25) no Hoare annotation was computed. [2020-10-23 17:57:18,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:57:18 BoogieIcfgContainer [2020-10-23 17:57:18,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:57:18,954 INFO L168 Benchmark]: Toolchain (without parser) took 15234.99 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 126.5 MB in the beginning and 239.8 MB in the end (delta: -113.3 MB). Peak memory consumption was 147.7 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:18,955 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 99.4 MB in the beginning and 99.3 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:57:18,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:18,956 INFO L168 Benchmark]: Boogie Preprocessor took 71.81 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:18,957 INFO L168 Benchmark]: RCFGBuilder took 569.26 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 100.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:18,958 INFO L168 Benchmark]: TraceAbstraction took 14269.66 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 134.1 MB in the beginning and 239.8 MB in the end (delta: -105.7 MB). Peak memory consumption was 154.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:57:18,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 99.4 MB in the beginning and 99.3 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.81 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.26 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 100.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14269.66 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 134.1 MB in the beginning and 239.8 MB in the end (delta: -105.7 MB). Peak memory consumption was 154.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.0s, OverallIterations: 8, TraceHistogramMax: 10, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 181 SDtfs, 347 SDslu, 380 SDs, 0 SdLazy, 2279 SolverSat, 487 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 544 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 122 PreInvPairs, 145 NumberOfFragments, 95 HoareAnnotationTreeSize, 122 FomulaSimplifications, 20968 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 11 FomulaSimplificationsInter, 1009 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 633 NumberOfCodeBlocks, 582 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 619 ConstructedInterpolants, 0 QuantifiedInterpolants, 65429 SizeOfPredicates, 19 NumberOfNonLiveVariables, 996 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 776/948 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...