/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/sum01_bug02.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 06:41:09,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 06:41:09,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 06:41:09,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 06:41:09,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 06:41:09,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 06:41:09,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 06:41:09,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 06:41:09,467 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 06:41:09,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 06:41:09,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 06:41:09,468 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 06:41:09,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 06:41:09,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 06:41:09,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 06:41:09,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 06:41:09,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 06:41:09,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 06:41:09,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 06:41:09,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 06:41:09,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 06:41:09,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 06:41:09,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 06:41:09,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 06:41:09,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 06:41:09,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 06:41:09,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:41:09,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 06:41:09,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 06:41:09,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 06:41:09,470 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 06:41:09,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 06:41:09,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 06:41:09,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 06:41:09,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 06:41:09,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 06:41:09,716 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 06:41:09,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2021-05-01 06:41:09,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81379f3c9/c941f8324afb4e64a01bd70f8410110c/FLAG4b20c7748 [2021-05-01 06:41:10,104 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 06:41:10,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i [2021-05-01 06:41:10,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81379f3c9/c941f8324afb4e64a01bd70f8410110c/FLAG4b20c7748 [2021-05-01 06:41:10,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81379f3c9/c941f8324afb4e64a01bd70f8410110c [2021-05-01 06:41:10,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 06:41:10,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 06:41:10,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 06:41:10,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 06:41:10,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 06:41:10,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:41:10" (1/1) ... [2021-05-01 06:41:10,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1cf307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10, skipping insertion in model container [2021-05-01 06:41:10,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:41:10" (1/1) ... [2021-05-01 06:41:10,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 06:41:10,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 06:41:10,642 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i[812,825] [2021-05-01 06:41:10,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:41:10,653 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 06:41:10,696 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i[812,825] [2021-05-01 06:41:10,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:41:10,711 INFO L208 MainTranslator]: Completed translation [2021-05-01 06:41:10,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10 WrapperNode [2021-05-01 06:41:10,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 06:41:10,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 06:41:10,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 06:41:10,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 06:41:10,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10" (1/1) ... [2021-05-01 06:41:10,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10" (1/1) ... [2021-05-01 06:41:10,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10" (1/1) ... [2021-05-01 06:41:10,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10" (1/1) ... [2021-05-01 06:41:10,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10" (1/1) ... [2021-05-01 06:41:10,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10" (1/1) ... [2021-05-01 06:41:10,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10" (1/1) ... [2021-05-01 06:41:10,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 06:41:10,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 06:41:10,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 06:41:10,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 06:41:10,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10" (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 [2021-05-01 06:41:10,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 06:41:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 06:41:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 06:41:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 06:41:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 06:41:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 06:41:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 06:41:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 06:41:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 06:41:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 06:41:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 06:41:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 06:41:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-01 06:41:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 06:41:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 06:41:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 06:41:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 06:41:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 06:41:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 06:41:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 06:41:10,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 06:41:10,983 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 06:41:10,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:41:10 BoogieIcfgContainer [2021-05-01 06:41:10,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 06:41:10,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 06:41:10,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 06:41:10,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 06:41:10,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 06:41:10" (1/3) ... [2021-05-01 06:41:10,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5643a9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:41:10, skipping insertion in model container [2021-05-01 06:41:10,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:41:10" (2/3) ... [2021-05-01 06:41:10,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5643a9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:41:10, skipping insertion in model container [2021-05-01 06:41:10,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:41:10" (3/3) ... [2021-05-01 06:41:10,988 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2021-05-01 06:41:10,992 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 06:41:10,999 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 06:41:11,014 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 06:41:11,034 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 06:41:11,034 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 06:41:11,034 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 06:41:11,034 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 06:41:11,034 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 06:41:11,034 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 06:41:11,034 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 06:41:11,034 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 06:41:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:41:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 06:41:11,059 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:11,059 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:11,059 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:11,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:11,062 INFO L82 PathProgramCache]: Analyzing trace with hash -872495525, now seen corresponding path program 1 times [2021-05-01 06:41:11,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:11,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66075040] [2021-05-01 06:41:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:11,114 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:11,230 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:11,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66075040] [2021-05-01 06:41:11,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [66075040] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:11,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:11,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 06:41:11,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114839179] [2021-05-01 06:41:11,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 06:41:11,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:11,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 06:41:11,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 06:41:11,245 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:11,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:11,301 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-01 06:41:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 06:41:11,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 06:41:11,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:11,306 INFO L225 Difference]: With dead ends: 32 [2021-05-01 06:41:11,306 INFO L226 Difference]: Without dead ends: 15 [2021-05-01 06:41:11,309 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 06:41:11,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-01 06:41:11,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-01 06:41:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-01 06:41:11,339 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-05-01 06:41:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:11,339 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-01 06:41:11,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-01 06:41:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 06:41:11,341 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:11,341 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:11,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 06:41:11,341 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:11,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:11,342 INFO L82 PathProgramCache]: Analyzing trace with hash -884501298, now seen corresponding path program 1 times [2021-05-01 06:41:11,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:11,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765254872] [2021-05-01 06:41:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:11,351 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:41:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:11,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:11,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:11,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:11,483 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:11,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765254872] [2021-05-01 06:41:11,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [765254872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:11,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:11,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 06:41:11,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796880282] [2021-05-01 06:41:11,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 06:41:11,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:11,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 06:41:11,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-01 06:41:11,485 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:11,631 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-01 06:41:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 06:41:11,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 06:41:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:11,633 INFO L225 Difference]: With dead ends: 24 [2021-05-01 06:41:11,633 INFO L226 Difference]: Without dead ends: 19 [2021-05-01 06:41:11,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:41:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-01 06:41:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-01 06:41:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-01 06:41:11,642 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2021-05-01 06:41:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:11,642 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-01 06:41:11,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-01 06:41:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-01 06:41:11,643 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:11,643 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:11,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 06:41:11,643 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:11,644 INFO L82 PathProgramCache]: Analyzing trace with hash 60854025, now seen corresponding path program 1 times [2021-05-01 06:41:11,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:11,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863127916] [2021-05-01 06:41:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:11,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:11,685 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= v_main_~i~0_11 v_main_~n~0_6) (< v_main_~i~0_11 v_main_~j~0_7)) InVars {main_~i~0=v_main_~i~0_11, main_~n~0=v_main_~n~0_6, main_~j~0=v_main_~j~0_7} OutVars{main_~i~0=v_main_~i~0_11, main_~n~0=v_main_~n~0_6, main_~j~0=v_main_~j~0_7} AuxVars[] AssignedVars[] [2021-05-01 06:41:11,710 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 89.2 percent of original size [2021-05-01 06:41:11,719 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,722 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,725 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,728 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,732 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,737 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,739 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,743 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,746 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,754 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-05-01 06:41:11,757 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,760 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,769 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,796 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:11,802 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:11,804 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,805 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:11,809 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,817 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,818 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:11,823 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:11,826 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:11,831 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,834 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,837 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,840 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,843 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,845 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,847 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,849 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 89.2 percent of original size 91 [2021-05-01 06:41:11,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 06:41:11,883 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:41:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,926 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:41:11,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:11,931 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-05-01 06:41:11,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:11,941 INFO L142 QuantifierPusher]: treesize reduction 13, result has 56.7 percent of original size [2021-05-01 06:41:11,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:11,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:11,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:11,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:11,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:11,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:11,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,007 INFO L147 QuantifierPusher]: treesize reduction 7, result has 88.7 percent of original size 55 [2021-05-01 06:41:12,084 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-05-01 06:41:12,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:12,108 INFO L142 QuantifierPusher]: treesize reduction 26, result has 42.2 percent of original size [2021-05-01 06:41:12,110 INFO L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-05-01 06:41:12,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:41:12,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:12,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,151 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:12,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863127916] [2021-05-01 06:41:12,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1863127916] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:12,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:12,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-01 06:41:12,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886193555] [2021-05-01 06:41:12,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 06:41:12,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:12,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 06:41:12,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:41:12,153 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:12,583 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-05-01 06:41:12,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-01 06:41:12,583 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-01 06:41:12,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:12,585 INFO L225 Difference]: With dead ends: 33 [2021-05-01 06:41:12,585 INFO L226 Difference]: Without dead ends: 28 [2021-05-01 06:41:12,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 459.6ms TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-05-01 06:41:12,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-01 06:41:12,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-05-01 06:41:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-05-01 06:41:12,607 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2021-05-01 06:41:12,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:12,607 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-05-01 06:41:12,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-05-01 06:41:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-01 06:41:12,608 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:12,608 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:12,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 06:41:12,608 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:12,608 INFO L82 PathProgramCache]: Analyzing trace with hash 371979204, now seen corresponding path program 2 times [2021-05-01 06:41:12,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:12,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996577803] [2021-05-01 06:41:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:12,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:12,617 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_15 v_main_~j~0_11) (<= (+ v_main_~i~0_15 1) v_main_~n~0_7)) InVars {main_~i~0=v_main_~i~0_15, main_~n~0=v_main_~n~0_7, main_~j~0=v_main_~j~0_11} OutVars{main_~i~0=v_main_~i~0_15, main_~n~0=v_main_~n~0_7, main_~j~0=v_main_~j~0_11} AuxVars[] AssignedVars[] [2021-05-01 06:41:12,627 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 89.8 percent of original size [2021-05-01 06:41:12,633 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,635 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-05-01 06:41:12,645 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,646 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,652 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:12,658 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,665 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,668 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:12,669 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:12,672 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,674 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,675 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:12,680 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,682 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,686 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,690 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,693 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:12,695 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,698 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,702 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,705 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,709 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,712 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,715 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,718 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,720 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,723 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,725 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,727 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,728 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 89.8 percent of original size 97 [2021-05-01 06:41:12,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 06:41:12,758 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:41:12,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:12,765 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_17 v_main_~j~0_13) (<= v_main_~i~0_17 v_main_~n~0_8)) InVars {main_~i~0=v_main_~i~0_17, main_~n~0=v_main_~n~0_8, main_~j~0=v_main_~j~0_13} OutVars{main_~i~0=v_main_~i~0_17, main_~n~0=v_main_~n~0_8, main_~j~0=v_main_~j~0_13} AuxVars[] AssignedVars[] [2021-05-01 06:41:12,774 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 89.2 percent of original size [2021-05-01 06:41:12,778 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,781 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-05-01 06:41:12,782 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,783 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,790 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:12,793 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,799 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:12,801 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,803 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:12,806 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,811 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,813 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:12,817 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:12,822 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,824 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,827 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,829 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,832 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,835 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,837 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,839 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:12,843 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,845 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,846 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,848 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,850 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,852 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,854 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,856 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,857 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 89.2 percent of original size 91 [2021-05-01 06:41:12,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-05-01 06:41:12,881 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:41:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:12,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,909 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-05-01 06:41:12,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:12,915 INFO L142 QuantifierPusher]: treesize reduction 14, result has 64.1 percent of original size [2021-05-01 06:41:12,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 06:41:12,925 INFO L142 QuantifierPusher]: treesize reduction 15, result has 53.1 percent of original size [2021-05-01 06:41:12,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 06:41:12,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:12,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:41:12,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:41:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:41:12,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:41:12,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:12,969 INFO L147 QuantifierPusher]: treesize reduction 7, result has 88.7 percent of original size 55 [2021-05-01 06:41:13,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-05-01 06:41:13,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 06:41:13,040 INFO L142 QuantifierPusher]: treesize reduction 26, result has 42.2 percent of original size [2021-05-01 06:41:13,041 INFO L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-05-01 06:41:13,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:41:13,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:41:13,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:13,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 06:41:13,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:41:13,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,148 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 06:41:13,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:41:13,165 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:41:13,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996577803] [2021-05-01 06:41:13,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [996577803] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:41:13,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:41:13,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-01 06:41:13,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873371937] [2021-05-01 06:41:13,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 06:41:13,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:41:13,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 06:41:13,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-05-01 06:41:13,166 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:41:13,819 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2021-05-01 06:41:13,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 06:41:13,819 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-01 06:41:13,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:41:13,820 INFO L225 Difference]: With dead ends: 38 [2021-05-01 06:41:13,820 INFO L226 Difference]: Without dead ends: 33 [2021-05-01 06:41:13,821 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 695.5ms TimeCoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2021-05-01 06:41:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-01 06:41:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-05-01 06:41:13,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-05-01 06:41:13,825 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2021-05-01 06:41:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:41:13,825 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-05-01 06:41:13,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:41:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-05-01 06:41:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-01 06:41:13,826 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:41:13,826 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:41:13,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 06:41:13,826 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:41:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:41:13,827 INFO L82 PathProgramCache]: Analyzing trace with hash -437367422, now seen corresponding path program 1 times [2021-05-01 06:41:13,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:41:13,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974581277] [2021-05-01 06:41:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:41:13,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:41:13,834 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_22 v_main_~j~0_18) (<= (+ v_main_~i~0_22 1) v_main_~n~0_9)) InVars {main_~i~0=v_main_~i~0_22, main_~n~0=v_main_~n~0_9, main_~j~0=v_main_~j~0_18} OutVars{main_~i~0=v_main_~i~0_22, main_~n~0=v_main_~n~0_9, main_~j~0=v_main_~j~0_18} AuxVars[] AssignedVars[] [2021-05-01 06:41:13,838 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 89.8 percent of original size [2021-05-01 06:41:13,841 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,844 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,846 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,849 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,855 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,858 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,860 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,862 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,863 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,864 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-05-01 06:41:13,865 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,866 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,870 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,873 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:13,877 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,879 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:13,880 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 06:41:13,882 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,884 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,885 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 06:41:13,887 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:13,890 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,893 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,894 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,896 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,898 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,901 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,903 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,905 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 06:41:13,905 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 89.8 percent of original size 97 [2021-05-01 06:41:13,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-05-01 06:41:13,934 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:41:13,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:13,941 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_24 v_main_~j~0_20) (<= v_main_~i~0_24 v_main_~n~0_10)) InVars {main_~i~0=v_main_~i~0_24, main_~n~0=v_main_~n~0_10, main_~j~0=v_main_~j~0_20} OutVars{main_~i~0=v_main_~i~0_24, main_~n~0=v_main_~n~0_10, main_~j~0=v_main_~j~0_20} AuxVars[] AssignedVars[] [2021-05-01 06:41:13,946 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 89.2 percent of original size [2021-05-01 06:41:13,949 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,952 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,954 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,956 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,959 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,961 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,963 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,966 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,966 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,967 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-05-01 06:41:13,969 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,970 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,974 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:13,977 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,981 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:13,983 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,983 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:13,987 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,989 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,990 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:13,992 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:13,996 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:13,999 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,001 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,003 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,005 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,007 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,009 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,012 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:14,013 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 89.2 percent of original size 91 [2021-05-01 06:41:14,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-05-01 06:41:14,038 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size [2021-05-01 06:41:14,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:41:14,041 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= v_main_~j~0_22 v_main_~i~0_26) (<= v_main_~i~0_26 v_main_~n~0_11)) InVars {main_~i~0=v_main_~i~0_26, main_~n~0=v_main_~n~0_11, main_~j~0=v_main_~j~0_22} OutVars{main_~i~0=v_main_~i~0_26, main_~n~0=v_main_~n~0_11, main_~j~0=v_main_~j~0_22} AuxVars[] AssignedVars[] [2021-05-01 06:41:14,044 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 88.0 percent of original size [2021-05-01 06:41:14,052 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,054 INFO L732 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-05-01 06:41:14,055 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,055 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,060 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:14,063 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,066 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:14,068 INFO L108 tifierPushTermWalker]: treesize reduction 7, result has 12.5 percent of original size [2021-05-01 06:41:14,068 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 06:41:14,070 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,070 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:41:14,072 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,075 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,077 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,080 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,104 INFO L108 tifierPushTermWalker]: treesize reduction 6, result has 14.3 percent of original size [2021-05-01 06:41:14,106 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,108 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 06:41:14,114 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,115 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,117 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,120 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,122 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,124 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,125 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,126 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 88.0 percent of original size 81 [2021-05-01 06:41:14,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:41:14,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 06:41:14,143 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 06:41:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 06:41:14,163 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 06:41:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 06:41:14,184 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 06:41:14,195 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-05-01 06:41:14,195 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 06:41:14,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-01 06:41:14,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 06:41:14 BoogieIcfgContainer [2021-05-01 06:41:14,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 06:41:14,209 INFO L168 Benchmark]: Toolchain (without parser) took 3666.80 ms. Allocated memory was 205.5 MB in the beginning and 282.1 MB in the end (delta: 76.5 MB). Free memory was 170.3 MB in the beginning and 248.4 MB in the end (delta: -78.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 06:41:14,209 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 205.5 MB. Free memory is still 186.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 06:41:14,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.27 ms. Allocated memory is still 205.5 MB. Free memory was 170.2 MB in the beginning and 188.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-01 06:41:14,209 INFO L168 Benchmark]: Boogie Preprocessor took 39.05 ms. Allocated memory is still 205.5 MB. Free memory was 188.7 MB in the beginning and 187.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 06:41:14,209 INFO L168 Benchmark]: RCFGBuilder took 232.34 ms. Allocated memory is still 205.5 MB. Free memory was 186.6 MB in the beginning and 173.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-01 06:41:14,211 INFO L168 Benchmark]: TraceAbstraction took 3223.47 ms. Allocated memory was 205.5 MB in the beginning and 282.1 MB in the end (delta: 76.5 MB). Free memory was 173.0 MB in the beginning and 248.4 MB in the end (delta: -75.4 MB). Peak memory consumption was 573.0 kB. Max. memory is 8.0 GB. [2021-05-01 06:41:14,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 205.5 MB. Free memory is still 186.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 167.27 ms. Allocated memory is still 205.5 MB. Free memory was 170.2 MB in the beginning and 188.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.05 ms. Allocated memory is still 205.5 MB. Free memory was 188.7 MB in the beginning and 187.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 232.34 ms. Allocated memory is still 205.5 MB. Free memory was 186.6 MB in the beginning and 173.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3223.47 ms. Allocated memory was 205.5 MB in the beginning and 282.1 MB in the end (delta: 76.5 MB). Free memory was 173.0 MB in the beginning and 248.4 MB in the end (delta: -75.4 MB). Peak memory consumption was 573.0 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L23] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L24] i=1 [L24] COND TRUE i<=n [L25] COND TRUE i