/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:29,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:29,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:29,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:16:29,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:29,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:29,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:29,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:29,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:29,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:29,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:29,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:29,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:29,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:29,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:29,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:29,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:16:29,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:16:29,697 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:29,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:29,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:29,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:29,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:29,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:29,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:29,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:29,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:29,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:29,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:29,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:29,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:29,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:29,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:29,706 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:29,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:29,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:29,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:29,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:29,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:29,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:29,708 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:30,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:30,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:30,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:30,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:30,136 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:30,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2021-02-24 00:16:30,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a3316ac/57a433e9042e492eb38cc01a25650cc6/FLAGb170de19d [2021-02-24 00:16:30,787 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:30,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c [2021-02-24 00:16:30,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a3316ac/57a433e9042e492eb38cc01a25650cc6/FLAGb170de19d [2021-02-24 00:16:31,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a3316ac/57a433e9042e492eb38cc01a25650cc6 [2021-02-24 00:16:31,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:31,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:31,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:31,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:31,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:31,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:31" (1/1) ... [2021-02-24 00:16:31,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bef7472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31, skipping insertion in model container [2021-02-24 00:16:31,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:31" (1/1) ... [2021-02-24 00:16:31,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:31,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:31,375 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c[319,332] [2021-02-24 00:16:31,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:31,400 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:31,412 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c[319,332] [2021-02-24 00:16:31,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:31,436 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:31,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31 WrapperNode [2021-02-24 00:16:31,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:31,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:31,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:31,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:31,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31" (1/1) ... [2021-02-24 00:16:31,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31" (1/1) ... [2021-02-24 00:16:31,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31" (1/1) ... [2021-02-24 00:16:31,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31" (1/1) ... [2021-02-24 00:16:31,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31" (1/1) ... [2021-02-24 00:16:31,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31" (1/1) ... [2021-02-24 00:16:31,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31" (1/1) ... [2021-02-24 00:16:31,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:31,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:31,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:31,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:31,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31" (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 [2021-02-24 00:16:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:16:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:31,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:31,997 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:16:32,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:32 BoogieIcfgContainer [2021-02-24 00:16:32,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:32,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:32,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:32,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:32,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:31" (1/3) ... [2021-02-24 00:16:32,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efbb45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:32, skipping insertion in model container [2021-02-24 00:16:32,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:31" (2/3) ... [2021-02-24 00:16:32,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efbb45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:32, skipping insertion in model container [2021-02-24 00:16:32,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:32" (3/3) ... [2021-02-24 00:16:32,030 INFO L111 eAbstractionObserver]: Analyzing ICFG array-1.c [2021-02-24 00:16:32,046 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:32,057 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:32,079 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:32,171 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:32,172 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:32,172 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:32,172 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:32,172 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:32,172 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:32,172 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:32,173 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-02-24 00:16:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-24 00:16:32,214 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:32,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:32,215 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:32,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:32,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1410802408, now seen corresponding path program 1 times [2021-02-24 00:16:32,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:32,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148773256] [2021-02-24 00:16:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:32,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:32,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:32,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:32,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:16:32,604 WARN L141 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size [2021-02-24 00:16:32,608 WARN L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-02-24 00:16:32,639 WARN L141 QuantifierPusher]: treesize reduction 2, result has 93.1 percent of original size [2021-02-24 00:16:32,644 WARN L147 QuantifierPusher]: treesize reduction 2, result has 93.1 percent of original size 27 [2021-02-24 00:16:32,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:32,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:32,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:32,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:32,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:32,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148773256] [2021-02-24 00:16:32,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:32,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:16:32,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332654577] [2021-02-24 00:16:32,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:16:32,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:32,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:16:32,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:16:32,835 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 5 states. [2021-02-24 00:16:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:33,070 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-02-24 00:16:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:16:33,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2021-02-24 00:16:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:33,081 INFO L225 Difference]: With dead ends: 81 [2021-02-24 00:16:33,081 INFO L226 Difference]: Without dead ends: 54 [2021-02-24 00:16:33,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:16:33,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-24 00:16:33,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2021-02-24 00:16:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-24 00:16:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-02-24 00:16:33,140 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 27 [2021-02-24 00:16:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:33,140 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-02-24 00:16:33,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:16:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-02-24 00:16:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-24 00:16:33,144 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:33,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:33,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:33,146 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:33,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1185701142, now seen corresponding path program 1 times [2021-02-24 00:16:33,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:33,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635501444] [2021-02-24 00:16:33,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:33,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:33,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:33,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:33,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:16:33,434 WARN L141 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size [2021-02-24 00:16:33,436 WARN L147 QuantifierPusher]: treesize reduction 13, result has 72.3 percent of original size 34 [2021-02-24 00:16:33,467 WARN L141 QuantifierPusher]: treesize reduction 25, result has 89.7 percent of original size [2021-02-24 00:16:33,475 WARN L147 QuantifierPusher]: treesize reduction 25, result has 89.7 percent of original size 218 [2021-02-24 00:16:33,582 WARN L141 QuantifierPusher]: treesize reduction 111, result has 72.2 percent of original size [2021-02-24 00:16:33,591 WARN L147 QuantifierPusher]: treesize reduction 111, result has 72.2 percent of original size 288 [2021-02-24 00:16:33,634 WARN L141 QuantifierPusher]: treesize reduction 53, result has 89.0 percent of original size [2021-02-24 00:16:33,645 WARN L147 QuantifierPusher]: treesize reduction 53, result has 89.0 percent of original size 430 [2021-02-24 00:16:33,713 WARN L141 QuantifierPusher]: treesize reduction 52, result has 87.8 percent of original size [2021-02-24 00:16:33,722 WARN L147 QuantifierPusher]: treesize reduction 52, result has 87.8 percent of original size 375 [2021-02-24 00:16:33,859 WARN L141 QuantifierPusher]: treesize reduction 52, result has 87.9 percent of original size [2021-02-24 00:16:33,867 WARN L147 QuantifierPusher]: treesize reduction 52, result has 87.9 percent of original size 377 [2021-02-24 00:16:33,984 WARN L141 QuantifierPusher]: treesize reduction 44, result has 47.6 percent of original size [2021-02-24 00:16:33,986 WARN L147 QuantifierPusher]: treesize reduction 44, result has 47.6 percent of original size 40 [2021-02-24 00:16:34,012 WARN L141 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-02-24 00:16:34,013 WARN L147 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size 9 [2021-02-24 00:16:34,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:16:34,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:34,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:34,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:34,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:34,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:34,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635501444] [2021-02-24 00:16:34,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:16:34,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:16:34,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568723224] [2021-02-24 00:16:34,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:16:34,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:34,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:16:34,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:16:34,110 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 13 states. [2021-02-24 00:16:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:34,455 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-02-24 00:16:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:16:34,456 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2021-02-24 00:16:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:34,470 INFO L225 Difference]: With dead ends: 66 [2021-02-24 00:16:34,470 INFO L226 Difference]: Without dead ends: 60 [2021-02-24 00:16:34,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:16:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-24 00:16:34,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2021-02-24 00:16:34,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-24 00:16:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2021-02-24 00:16:34,485 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 37 [2021-02-24 00:16:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:34,486 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2021-02-24 00:16:34,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:16:34,486 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2021-02-24 00:16:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-24 00:16:34,488 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:34,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:34,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:34,489 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:34,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1528734096, now seen corresponding path program 1 times [2021-02-24 00:16:34,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:34,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137812854] [2021-02-24 00:16:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:34,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:34,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:16:34,627 WARN L141 QuantifierPusher]: treesize reduction 11, result has 93.9 percent of original size [2021-02-24 00:16:34,634 WARN L147 QuantifierPusher]: treesize reduction 11, result has 93.9 percent of original size 168 [2021-02-24 00:16:34,683 WARN L141 QuantifierPusher]: treesize reduction 101, result has 65.1 percent of original size [2021-02-24 00:16:34,691 WARN L147 QuantifierPusher]: treesize reduction 101, result has 65.1 percent of original size 188 [2021-02-24 00:16:34,716 WARN L141 QuantifierPusher]: treesize reduction 64, result has 84.4 percent of original size [2021-02-24 00:16:34,722 WARN L147 QuantifierPusher]: treesize reduction 64, result has 84.4 percent of original size 347 [2021-02-24 00:16:34,747 WARN L141 QuantifierPusher]: treesize reduction 63, result has 82.3 percent of original size [2021-02-24 00:16:34,752 WARN L147 QuantifierPusher]: treesize reduction 63, result has 82.3 percent of original size 292 [2021-02-24 00:16:34,821 WARN L141 QuantifierPusher]: treesize reduction 63, result has 82.3 percent of original size [2021-02-24 00:16:34,826 WARN L147 QuantifierPusher]: treesize reduction 63, result has 82.3 percent of original size 292 [2021-02-24 00:16:34,885 WARN L141 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-02-24 00:16:34,887 WARN L147 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size 11 [2021-02-24 00:16:34,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:34,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:34,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:34,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:34,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:34,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:34,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:34,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137812854] [2021-02-24 00:16:34,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:16:34,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:16:34,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888085767] [2021-02-24 00:16:34,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:16:34,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:34,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:16:34,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:16:34,973 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 11 states. [2021-02-24 00:16:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:35,229 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-02-24 00:16:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:16:35,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2021-02-24 00:16:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:35,231 INFO L225 Difference]: With dead ends: 68 [2021-02-24 00:16:35,231 INFO L226 Difference]: Without dead ends: 62 [2021-02-24 00:16:35,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:16:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-02-24 00:16:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-02-24 00:16:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-24 00:16:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-02-24 00:16:35,244 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 40 [2021-02-24 00:16:35,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:35,245 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-02-24 00:16:35,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:16:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-02-24 00:16:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 00:16:35,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:35,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:35,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:16:35,247 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:35,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1419326916, now seen corresponding path program 2 times [2021-02-24 00:16:35,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:35,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58217011] [2021-02-24 00:16:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:35,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:35,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:35,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:35,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:16:35,364 WARN L141 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size [2021-02-24 00:16:35,364 WARN L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-02-24 00:16:35,368 WARN L141 QuantifierPusher]: treesize reduction 3, result has 91.4 percent of original size [2021-02-24 00:16:35,369 WARN L147 QuantifierPusher]: treesize reduction 3, result has 91.4 percent of original size 32 [2021-02-24 00:16:35,383 WARN L141 QuantifierPusher]: treesize reduction 3, result has 91.4 percent of original size [2021-02-24 00:16:35,384 WARN L147 QuantifierPusher]: treesize reduction 3, result has 91.4 percent of original size 32 [2021-02-24 00:16:35,399 WARN L141 QuantifierPusher]: treesize reduction 4, result has 93.3 percent of original size [2021-02-24 00:16:35,402 WARN L147 QuantifierPusher]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-02-24 00:16:35,432 WARN L141 QuantifierPusher]: treesize reduction 4, result has 94.6 percent of original size [2021-02-24 00:16:35,433 WARN L147 QuantifierPusher]: treesize reduction 4, result has 94.6 percent of original size 70 [2021-02-24 00:16:35,436 WARN L141 QuantifierPusher]: treesize reduction 15, result has 57.1 percent of original size [2021-02-24 00:16:35,437 WARN L147 QuantifierPusher]: treesize reduction 15, result has 57.1 percent of original size 20 [2021-02-24 00:16:35,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:35,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:35,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:35,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:35,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:35,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58217011] [2021-02-24 00:16:35,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:16:35,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:16:35,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138998666] [2021-02-24 00:16:35,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:16:35,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:35,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:16:35,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:16:35,476 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 7 states. [2021-02-24 00:16:35,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:35,612 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-02-24 00:16:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:16:35,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2021-02-24 00:16:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:35,613 INFO L225 Difference]: With dead ends: 56 [2021-02-24 00:16:35,613 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:16:35,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:16:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:16:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:16:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:16:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:16:35,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-02-24 00:16:35,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:35,616 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:16:35,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:16:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:16:35,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:16:35,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:16:35,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:16:36,226 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 00:16:36,227 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 00:16:36,227 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 00:16:36,227 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 00:16:36,227 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 00:16:36,227 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:16:36,227 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 00:16:36,228 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:16:36,229 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 00:16:36,229 INFO L185 CegarLoopUtils]: 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|)) [2021-02-24 00:16:36,230 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 00:16:36,230 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 00:16:36,230 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:16:36,230 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:16:36,230 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:16:36,230 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:16:36,230 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:16:36,230 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (= main_~j~0 0) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,231 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 13 31) the Hoare annotation is: (= main_~SIZE~0 1) [2021-02-24 00:16:36,231 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (<= |main_#t~mem11| (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (= main_~j~0 0) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,231 INFO L185 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (and (<= |main_#t~mem11| .cse0) (= main_~j~0 0) (<= main_~menor~0 .cse0) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1))) [2021-02-24 00:16:36,232 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,232 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,232 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,232 INFO L185 CegarLoopUtils]: At program point L21-3(lines 21 26) the Hoare annotation is: (and (= main_~j~0 0) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,232 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= |old(#length)| |#length|) (= main_~SIZE~0 1) (= |old(#valid)| |#valid|)) [2021-02-24 00:16:36,232 INFO L185 CegarLoopUtils]: At program point L19-2(line 19) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,233 INFO L185 CegarLoopUtils]: At program point L21-4(line 21) the Hoare annotation is: (and (= |main_#t~post8| 0) (= main_~j~0 0) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,233 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,233 INFO L185 CegarLoopUtils]: At program point L21-5(line 21) the Hoare annotation is: (and (<= 1 main_~j~0) (= |main_#t~post8| 0) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1) (< (div main_~j~0 4294967296) (+ (div main_~SIZE~0 4294967296) 1))) [2021-02-24 00:16:36,233 INFO L185 CegarLoopUtils]: At program point L21-6(lines 21 26) the Hoare annotation is: (let ((.cse0 (= |main_~#array~0.offset| 0)) (.cse1 (= main_~SIZE~0 1))) (or (and (= main_~j~0 0) .cse0 .cse1) (and (<= 1 main_~j~0) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) .cse0 .cse1 (< (div main_~j~0 4294967296) (+ (div main_~SIZE~0 4294967296) 1))))) [2021-02-24 00:16:36,233 INFO L185 CegarLoopUtils]: At program point L17-2(line 17) the Hoare annotation is: (= main_~SIZE~0 1) [2021-02-24 00:16:36,234 INFO L185 CegarLoopUtils]: At program point L21-7(lines 21 26) the Hoare annotation is: (and (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,234 INFO L185 CegarLoopUtils]: At program point L17-3(line 17) the Hoare annotation is: (= main_~SIZE~0 1) [2021-02-24 00:16:36,234 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 13 31) the Hoare annotation is: (= main_~SIZE~0 1) [2021-02-24 00:16:36,234 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (= main_~SIZE~0 1) [2021-02-24 00:16:36,234 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 13 31) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-24 00:16:36,234 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~menor~0 |main_#t~mem12|) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,235 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (= main_~SIZE~0 1) [2021-02-24 00:16:36,235 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (and (= main_~j~0 0) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,235 INFO L185 CegarLoopUtils]: At program point L24-1(lines 24 25) the Hoare annotation is: (and (= main_~j~0 0) (<= |main_#t~mem10| (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,235 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (= main_~j~0 0) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,235 INFO L185 CegarLoopUtils]: At program point L24-2(line 24) the Hoare annotation is: (and (= main_~j~0 0) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,236 INFO L185 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: (and (= main_~j~0 0) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,236 INFO L185 CegarLoopUtils]: At program point L22-2(line 22) the Hoare annotation is: (and (= main_~j~0 0) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2021-02-24 00:16:36,237 INFO L185 CegarLoopUtils]: At program point L24-4(line 24) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (and (= main_~j~0 0) (<= |main_#t~mem10| .cse0) (= |main_~#array~0.offset| 0) (<= (+ main_~menor~0 1) .cse0) (= main_~SIZE~0 1))) [2021-02-24 00:16:36,237 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (and (= |old(#length)| |#length|) (= main_~SIZE~0 1) (= |old(#valid)| |#valid|)) [2021-02-24 00:16:36,238 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (= |old(#length)| |#length|) (= main_~SIZE~0 1) (= |old(#valid)| |#valid|)) [2021-02-24 00:16:36,238 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-24 00:16:36,238 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-02-24 00:16:36,238 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:16:36,238 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:16:36,238 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:16:36,238 INFO L192 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-02-24 00:16:36,239 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:16:36,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:36 BoogieIcfgContainer [2021-02-24 00:16:36,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:36,278 INFO L168 Benchmark]: Toolchain (without parser) took 5103.90 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 132.4 MB in the beginning and 141.9 MB in the end (delta: -9.5 MB). Peak memory consumption was 102.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:36,279 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:36,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.82 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 121.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:36,282 INFO L168 Benchmark]: Boogie Preprocessor took 39.51 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:36,282 INFO L168 Benchmark]: RCFGBuilder took 527.80 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 103.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:36,285 INFO L168 Benchmark]: TraceAbstraction took 4259.68 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 103.4 MB in the beginning and 141.9 MB in the end (delta: -38.5 MB). Peak memory consumption was 73.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:36,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 257.82 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 121.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.51 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 527.80 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 103.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4259.68 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 103.4 MB in the beginning and 141.9 MB in the end (delta: -38.5 MB). Peak memory consumption was 73.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((j == 0 && array == 0) && SIZE == 1) || ((((1 <= j && menor <= unknown-#memory_int-unknown[array][array]) && array == 0) && SIZE == 1) && j / 4294967296 < SIZE / 4294967296 + 1) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: SIZE == 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 143 SDtfs, 251 SDslu, 381 SDs, 0 SdLazy, 414 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 52 LocationsWithAnnotation, 73 PreInvPairs, 106 NumberOfFragments, 432 HoareAnnotationTreeSize, 73 FomulaSimplifications, 359 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 52 FomulaSimplificationsInter, 342 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 27578 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 11/14 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...