/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-03 00:17:09,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 00:17:09,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 00:17:09,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 00:17:09,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 00:17:09,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 00:17:09,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 00:17:09,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-03 00:17:09,748 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 00:17:09,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 00:17:09,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 00:17:09,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 00:17:09,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 00:17:09,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 00:17:09,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 00:17:09,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 00:17:09,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 00:17:09,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 00:17:09,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 00:17:09,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 00:17:09,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 00:17:09,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 00:17:09,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 00:17:09,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 00:17:09,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 00:17:09,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 00:17:09,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 00:17:09,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 00:17:09,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-03 00:17:09,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 00:17:09,756 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-03 00:17:09,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-03 00:17:10,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 00:17:10,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 00:17:10,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 00:17:10,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-03 00:17:10,187 INFO L275 PluginConnector]: CDTParser initialized [2021-05-03 00:17:10,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2021-05-03 00:17:10,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44990a668/4b843e1a134746e2b463e353e19674ee/FLAGe93d54e87 [2021-05-03 00:17:10,750 INFO L306 CDTParser]: Found 1 translation units. [2021-05-03 00:17:10,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2021-05-03 00:17:10,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44990a668/4b843e1a134746e2b463e353e19674ee/FLAGe93d54e87 [2021-05-03 00:17:11,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44990a668/4b843e1a134746e2b463e353e19674ee [2021-05-03 00:17:11,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 00:17:11,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 00:17:11,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-03 00:17:11,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-03 00:17:11,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-03 00:17:11,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:17:11" (1/1) ... [2021-05-03 00:17:11,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6350c989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11, skipping insertion in model container [2021-05-03 00:17:11,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:17:11" (1/1) ... [2021-05-03 00:17:11,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-03 00:17:11,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-03 00:17:11,429 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-crafted-1/sumt2.c[403,416] [2021-05-03 00:17:11,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:17:11,448 INFO L203 MainTranslator]: Completed pre-run [2021-05-03 00:17:11,505 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-crafted-1/sumt2.c[403,416] [2021-05-03 00:17:11,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:17:11,541 INFO L208 MainTranslator]: Completed translation [2021-05-03 00:17:11,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11 WrapperNode [2021-05-03 00:17:11,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-03 00:17:11,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 00:17:11,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 00:17:11,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 00:17:11,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11" (1/1) ... [2021-05-03 00:17:11,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11" (1/1) ... [2021-05-03 00:17:11,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11" (1/1) ... [2021-05-03 00:17:11,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11" (1/1) ... [2021-05-03 00:17:11,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11" (1/1) ... [2021-05-03 00:17:11,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11" (1/1) ... [2021-05-03 00:17:11,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11" (1/1) ... [2021-05-03 00:17:11,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 00:17:11,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 00:17:11,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 00:17:11,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 00:17:11,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11" (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 [2021-05-03 00:17:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-03 00:17:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 00:17:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-03 00:17:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-03 00:17:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-03 00:17:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-03 00:17:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-03 00:17:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-03 00:17:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-03 00:17:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-03 00:17:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-03 00:17:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-03 00:17:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-03 00:17:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-03 00:17:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-03 00:17:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-03 00:17:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 00:17:11,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-03 00:17:11,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-03 00:17:11,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-03 00:17:12,009 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 00:17:12,010 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-03 00:17:12,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:17:12 BoogieIcfgContainer [2021-05-03 00:17:12,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 00:17:12,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 00:17:12,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 00:17:12,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 00:17:12,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 12:17:11" (1/3) ... [2021-05-03 00:17:12,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc527b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:17:12, skipping insertion in model container [2021-05-03 00:17:12,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:17:11" (2/3) ... [2021-05-03 00:17:12,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc527b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:17:12, skipping insertion in model container [2021-05-03 00:17:12,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:17:12" (3/3) ... [2021-05-03 00:17:12,032 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt2.c [2021-05-03 00:17:12,054 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-03 00:17:12,058 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 00:17:12,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-03 00:17:12,092 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 00:17:12,092 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 00:17:12,092 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-03 00:17:12,092 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 00:17:12,093 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 00:17:12,093 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 00:17:12,093 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 00:17:12,093 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 00:17:12,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-05-03 00:17:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-03 00:17:12,114 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:12,115 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:12,115 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:12,123 INFO L82 PathProgramCache]: Analyzing trace with hash 410732699, now seen corresponding path program 1 times [2021-05-03 00:17:12,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:12,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320791854] [2021-05-03 00:17:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:12,192 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:17:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:12,473 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:12,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320791854] [2021-05-03 00:17:12,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1320791854] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:12,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:12,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 00:17:12,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117156651] [2021-05-03 00:17:12,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 00:17:12,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:12,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 00:17:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:17:12,498 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-05-03 00:17:12,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:12,589 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-05-03 00:17:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 00:17:12,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2021-05-03 00:17:12,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:12,597 INFO L225 Difference]: With dead ends: 34 [2021-05-03 00:17:12,598 INFO L226 Difference]: Without dead ends: 15 [2021-05-03 00:17:12,602 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:17:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-03 00:17:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-03 00:17:12,643 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) [2021-05-03 00:17:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-03 00:17:12,647 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-03 00:17:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:12,647 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-03 00:17:12,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-05-03 00:17:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-03 00:17:12,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-03 00:17:12,649 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:12,649 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:12,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 00:17:12,650 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:12,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:12,652 INFO L82 PathProgramCache]: Analyzing trace with hash 400573968, now seen corresponding path program 1 times [2021-05-03 00:17:12,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:12,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243673893] [2021-05-03 00:17:12,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:12,658 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:17:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:12,870 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:12,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243673893] [2021-05-03 00:17:12,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [243673893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:12,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:12,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-03 00:17:12,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724245642] [2021-05-03 00:17:12,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 00:17:12,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:12,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 00:17:12,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-03 00:17:12,873 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-05-03 00:17:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:13,023 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-05-03 00:17:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 00:17:13,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2021-05-03 00:17:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:13,024 INFO L225 Difference]: With dead ends: 28 [2021-05-03 00:17:13,024 INFO L226 Difference]: Without dead ends: 17 [2021-05-03 00:17:13,026 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 167.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-03 00:17:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-03 00:17:13,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-03 00:17:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-05-03 00:17:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-05-03 00:17:13,032 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2021-05-03 00:17:13,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:13,032 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-05-03 00:17:13,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-05-03 00:17:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-05-03 00:17:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-03 00:17:13,033 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:13,033 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:13,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 00:17:13,033 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:13,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:13,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1582670899, now seen corresponding path program 1 times [2021-05-03 00:17:13,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:13,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201063146] [2021-05-03 00:17:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:13,087 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_12 4294967296) (mod v_main_~n~0_8 4294967296)) (= (mod v_main_~l~0_12 2) 0)) InVars {main_~l~0=v_main_~l~0_12, main_~n~0=v_main_~n~0_8} OutVars{main_~l~0=v_main_~l~0_12, main_~n~0=v_main_~n~0_8} AuxVars[] AssignedVars[] [2021-05-03 00:17:13,103 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:13,108 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:13,128 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:17,171 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:17:19,186 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-03 00:17:21,639 WARN L205 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:17:21,656 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:21,667 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:21,696 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:21,714 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:17:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:22,059 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:22,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201063146] [2021-05-03 00:17:22,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1201063146] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:22,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:22,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 00:17:22,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446461034] [2021-05-03 00:17:22,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 00:17:22,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:22,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 00:17:22,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-03 00:17:22,061 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 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) [2021-05-03 00:17:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:22,354 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-05-03 00:17:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 00:17:22,354 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 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 [2021-05-03 00:17:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:22,355 INFO L225 Difference]: With dead ends: 28 [2021-05-03 00:17:22,355 INFO L226 Difference]: Without dead ends: 20 [2021-05-03 00:17:22,356 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 392.1ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-05-03 00:17:22,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-03 00:17:22,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-03 00:17:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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) [2021-05-03 00:17:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-05-03 00:17:22,361 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2021-05-03 00:17:22,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:22,361 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-05-03 00:17:22,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 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) [2021-05-03 00:17:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-05-03 00:17:22,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-03 00:17:22,362 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:22,362 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:22,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-03 00:17:22,363 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:22,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1085372558, now seen corresponding path program 1 times [2021-05-03 00:17:22,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:22,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503586739] [2021-05-03 00:17:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:22,376 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_16 1) 4294967296) (mod v_main_~n~0_9 4294967296)) (= (mod v_main_~l~0_16 2) 0)) InVars {main_~l~0=v_main_~l~0_16, main_~n~0=v_main_~n~0_9} OutVars{main_~l~0=v_main_~l~0_16, main_~n~0=v_main_~n~0_9} AuxVars[] AssignedVars[] [2021-05-03 00:17:22,383 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:22,408 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:22,417 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:22,477 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:22,493 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:22,496 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:22,508 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:17:22,519 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_18 4294967296) (mod v_main_~n~0_10 4294967296)) (not (= (mod v_main_~l~0_18 2) 0))) InVars {main_~l~0=v_main_~l~0_18, main_~n~0=v_main_~n~0_10} OutVars{main_~l~0=v_main_~l~0_18, main_~n~0=v_main_~n~0_10} AuxVars[] AssignedVars[] [2021-05-03 00:17:22,529 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:22,533 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:22,542 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:22,559 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:22,563 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:22,586 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:22,601 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_20 4294967296) (mod v_main_~n~0_11 4294967296)) (= (mod v_main_~l~0_20 2) 0)) InVars {main_~l~0=v_main_~l~0_20, main_~n~0=v_main_~n~0_11} OutVars{main_~l~0=v_main_~l~0_20, main_~n~0=v_main_~n~0_11} AuxVars[] AssignedVars[] [2021-05-03 00:17:22,609 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:22,611 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:22,615 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:22,654 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:22,658 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:22,676 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:22,686 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:22,979 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:22,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503586739] [2021-05-03 00:17:22,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1503586739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:22,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:22,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-03 00:17:22,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11129417] [2021-05-03 00:17:22,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-03 00:17:22,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:22,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-03 00:17:22,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-05-03 00:17:22,981 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-05-03 00:17:23,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:23,322 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-03 00:17:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 00:17:23,323 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 10 states have internal predecessors, (14), 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 18 [2021-05-03 00:17:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:23,323 INFO L225 Difference]: With dead ends: 31 [2021-05-03 00:17:23,323 INFO L226 Difference]: Without dead ends: 23 [2021-05-03 00:17:23,324 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 414.3ms TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-05-03 00:17:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-03 00:17:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-05-03 00:17:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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) [2021-05-03 00:17:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-05-03 00:17:23,329 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2021-05-03 00:17:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:23,329 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-05-03 00:17:23,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-05-03 00:17:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-05-03 00:17:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-03 00:17:23,330 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:23,330 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:23,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-03 00:17:23,331 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:23,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1187707093, now seen corresponding path program 2 times [2021-05-03 00:17:23,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:23,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583433672] [2021-05-03 00:17:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:23,344 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_26 2) 0) (< (mod (+ v_main_~l~0_26 1) 4294967296) (mod v_main_~n~0_12 4294967296))) InVars {main_~l~0=v_main_~l~0_26, main_~n~0=v_main_~n~0_12} OutVars{main_~l~0=v_main_~l~0_26, main_~n~0=v_main_~n~0_12} AuxVars[] AssignedVars[] [2021-05-03 00:17:23,349 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:23,370 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:23,374 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:27,398 WARN L205 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-03 00:17:31,432 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:17:35,460 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:17:35,463 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:35,468 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:35,471 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:35,492 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_28 1) 4294967296) (mod v_main_~n~0_13 4294967296)) (not (= (mod v_main_~l~0_28 2) 0))) InVars {main_~l~0=v_main_~l~0_28, main_~n~0=v_main_~n~0_13} OutVars{main_~l~0=v_main_~l~0_28, main_~n~0=v_main_~n~0_13} AuxVars[] AssignedVars[] [2021-05-03 00:17:35,501 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:35,508 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:35,513 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:35,536 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:35,540 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:35,559 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:35,572 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:35,592 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_30 2) 0)) (< (mod v_main_~l~0_30 4294967296) (mod v_main_~n~0_14 4294967296))) InVars {main_~l~0=v_main_~l~0_30, main_~n~0=v_main_~n~0_14} OutVars{main_~l~0=v_main_~l~0_30, main_~n~0=v_main_~n~0_14} AuxVars[] AssignedVars[] [2021-05-03 00:17:35,596 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:35,619 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:35,625 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:35,640 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:35,643 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:35,647 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:35,683 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_32 4294967296) (mod v_main_~n~0_15 4294967296)) (= (mod v_main_~l~0_32 2) 0)) InVars {main_~l~0=v_main_~l~0_32, main_~n~0=v_main_~n~0_15} OutVars{main_~l~0=v_main_~l~0_32, main_~n~0=v_main_~n~0_15} AuxVars[] AssignedVars[] [2021-05-03 00:17:35,688 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:35,690 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:35,698 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:35,740 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:35,743 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:35,765 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:35,774 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:35,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:35,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:17:36,145 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:36,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583433672] [2021-05-03 00:17:36,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [583433672] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:36,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:36,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-03 00:17:36,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916121755] [2021-05-03 00:17:36,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-03 00:17:36,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:36,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-03 00:17:36,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-05-03 00:17:36,147 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-05-03 00:17:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:36,701 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-03 00:17:36,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-03 00:17:36,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 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 21 [2021-05-03 00:17:36,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:36,702 INFO L225 Difference]: With dead ends: 34 [2021-05-03 00:17:36,702 INFO L226 Difference]: Without dead ends: 26 [2021-05-03 00:17:36,703 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 683.7ms TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-05-03 00:17:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-03 00:17:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-03 00:17:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 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) [2021-05-03 00:17:36,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-05-03 00:17:36,709 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21 [2021-05-03 00:17:36,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:36,709 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-05-03 00:17:36,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-05-03 00:17:36,710 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-05-03 00:17:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-03 00:17:36,710 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:36,710 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:36,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-03 00:17:36,711 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:36,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1365948244, now seen corresponding path program 3 times [2021-05-03 00:17:36,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:36,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032900690] [2021-05-03 00:17:36,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:36,723 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_39 1) 4294967296) (mod v_main_~n~0_16 4294967296)) (= (mod v_main_~l~0_39 2) 0)) InVars {main_~l~0=v_main_~l~0_39, main_~n~0=v_main_~n~0_16} OutVars{main_~l~0=v_main_~l~0_39, main_~n~0=v_main_~n~0_16} AuxVars[] AssignedVars[] [2021-05-03 00:17:36,727 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:36,729 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:36,732 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:36,774 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:36,779 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:36,798 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:36,814 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_41 2) 0)) (< (mod (+ v_main_~l~0_41 1) 4294967296) (mod v_main_~n~0_17 4294967296))) InVars {main_~l~0=v_main_~l~0_41, main_~n~0=v_main_~n~0_17} OutVars{main_~l~0=v_main_~l~0_41, main_~n~0=v_main_~n~0_17} AuxVars[] AssignedVars[] [2021-05-03 00:17:36,818 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:36,839 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:36,842 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:36,861 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:36,864 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:36,867 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:36,877 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:36,880 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_43 4294967296) (mod v_main_~n~0_18 4294967296)) (not (= (mod v_main_~l~0_43 2) 0))) InVars {main_~l~0=v_main_~l~0_43, main_~n~0=v_main_~n~0_18} OutVars{main_~l~0=v_main_~l~0_43, main_~n~0=v_main_~n~0_18} AuxVars[] AssignedVars[] [2021-05-03 00:17:36,884 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:36,906 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:36,909 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:36,918 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:36,922 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:36,925 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:36,939 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_45 4294967296) (mod v_main_~n~0_19 4294967296)) (= (mod v_main_~l~0_45 2) 0)) InVars {main_~l~0=v_main_~l~0_45, main_~n~0=v_main_~n~0_19} OutVars{main_~l~0=v_main_~l~0_45, main_~n~0=v_main_~n~0_19} AuxVars[] AssignedVars[] [2021-05-03 00:17:36,943 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:36,964 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:36,967 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:37,051 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:37,054 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:37,057 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:37,068 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:37,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:37,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:17:37,547 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:37,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032900690] [2021-05-03 00:17:37,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2032900690] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:37,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:37,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-03 00:17:37,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080761539] [2021-05-03 00:17:37,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-03 00:17:37,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:37,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-03 00:17:37,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-05-03 00:17:37,549 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 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) [2021-05-03 00:17:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:38,192 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-05-03 00:17:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-03 00:17:38,193 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 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 24 [2021-05-03 00:17:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:38,194 INFO L225 Difference]: With dead ends: 37 [2021-05-03 00:17:38,194 INFO L226 Difference]: Without dead ends: 29 [2021-05-03 00:17:38,195 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 855.2ms TimeCoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2021-05-03 00:17:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-03 00:17:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-03 00:17:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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) [2021-05-03 00:17:38,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-05-03 00:17:38,208 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 24 [2021-05-03 00:17:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:38,209 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-05-03 00:17:38,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 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) [2021-05-03 00:17:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-05-03 00:17:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-03 00:17:38,211 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:38,211 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:38,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-03 00:17:38,212 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:38,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1218628599, now seen corresponding path program 4 times [2021-05-03 00:17:38,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:38,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934632781] [2021-05-03 00:17:38,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:38,250 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_53 2) 0) (< (mod (+ v_main_~l~0_53 1) 4294967296) (mod v_main_~n~0_20 4294967296))) InVars {main_~l~0=v_main_~l~0_53, main_~n~0=v_main_~n~0_20} OutVars{main_~l~0=v_main_~l~0_53, main_~n~0=v_main_~n~0_20} AuxVars[] AssignedVars[] [2021-05-03 00:17:38,257 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:38,259 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:38,263 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:38,298 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:38,301 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:38,317 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:38,335 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_55 2) 0)) (< (mod (+ v_main_~l~0_55 1) 4294967296) (mod v_main_~n~0_21 4294967296))) InVars {main_~l~0=v_main_~l~0_55, main_~n~0=v_main_~n~0_21} OutVars{main_~l~0=v_main_~l~0_55, main_~n~0=v_main_~n~0_21} AuxVars[] AssignedVars[] [2021-05-03 00:17:38,339 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:38,359 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:38,363 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:38,374 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:38,377 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:38,380 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:38,391 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:38,394 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_57 4294967296) (mod v_main_~n~0_22 4294967296)) (not (= (mod v_main_~l~0_57 2) 0))) InVars {main_~l~0=v_main_~l~0_57, main_~n~0=v_main_~n~0_22} OutVars{main_~l~0=v_main_~l~0_57, main_~n~0=v_main_~n~0_22} AuxVars[] AssignedVars[] [2021-05-03 00:17:38,398 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:38,402 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:38,407 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:38,432 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:38,436 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:38,452 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:38,467 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_59 2) 0) (< (mod v_main_~l~0_59 4294967296) (mod v_main_~n~0_23 4294967296))) InVars {main_~l~0=v_main_~l~0_59, main_~n~0=v_main_~n~0_23} OutVars{main_~l~0=v_main_~l~0_59, main_~n~0=v_main_~n~0_23} AuxVars[] AssignedVars[] [2021-05-03 00:17:38,475 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:38,497 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:38,502 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:38,548 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:38,551 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:38,554 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:38,565 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:38,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:39,125 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:39,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934632781] [2021-05-03 00:17:39,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1934632781] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:39,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:39,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-03 00:17:39,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030093477] [2021-05-03 00:17:39,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-03 00:17:39,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:39,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-03 00:17:39,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2021-05-03 00:17:39,128 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-05-03 00:17:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:40,016 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-05-03 00:17:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-03 00:17:40,016 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 19 states have internal predecessors, (23), 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 27 [2021-05-03 00:17:40,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:40,017 INFO L225 Difference]: With dead ends: 40 [2021-05-03 00:17:40,017 INFO L226 Difference]: Without dead ends: 32 [2021-05-03 00:17:40,018 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1088.1ms TimeCoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2021-05-03 00:17:40,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-03 00:17:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-03 00:17:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 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) [2021-05-03 00:17:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-05-03 00:17:40,024 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 27 [2021-05-03 00:17:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:40,024 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-05-03 00:17:40,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-05-03 00:17:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-05-03 00:17:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-03 00:17:40,025 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:40,025 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:40,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-03 00:17:40,025 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:40,026 INFO L82 PathProgramCache]: Analyzing trace with hash -693635658, now seen corresponding path program 5 times [2021-05-03 00:17:40,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:40,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246311796] [2021-05-03 00:17:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:40,039 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_68 1) 4294967296) (mod v_main_~n~0_24 4294967296)) (= 0 (mod v_main_~l~0_68 2))) InVars {main_~l~0=v_main_~l~0_68, main_~n~0=v_main_~n~0_24} OutVars{main_~l~0=v_main_~l~0_68, main_~n~0=v_main_~n~0_24} AuxVars[] AssignedVars[] [2021-05-03 00:17:40,043 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:40,045 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:40,048 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:40,082 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:40,086 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:40,103 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:40,119 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_70 1) 4294967296) (mod v_main_~n~0_25 4294967296)) (not (= (mod v_main_~l~0_70 2) 0))) InVars {main_~l~0=v_main_~l~0_70, main_~n~0=v_main_~n~0_25} OutVars{main_~l~0=v_main_~l~0_70, main_~n~0=v_main_~n~0_25} AuxVars[] AssignedVars[] [2021-05-03 00:17:40,122 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:40,144 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:40,147 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:40,168 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:40,171 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:40,174 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:40,186 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:40,190 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_72 2) 0)) (< (mod v_main_~l~0_72 4294967296) (mod v_main_~n~0_26 4294967296))) InVars {main_~l~0=v_main_~l~0_72, main_~n~0=v_main_~n~0_26} OutVars{main_~l~0=v_main_~l~0_72, main_~n~0=v_main_~n~0_26} AuxVars[] AssignedVars[] [2021-05-03 00:17:40,196 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:40,200 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:40,203 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:40,222 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:40,226 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:40,243 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:40,260 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_74 4294967296) (mod v_main_~n~0_27 4294967296)) (= (mod v_main_~l~0_74 2) 0)) InVars {main_~l~0=v_main_~l~0_74, main_~n~0=v_main_~n~0_27} OutVars{main_~l~0=v_main_~l~0_74, main_~n~0=v_main_~n~0_27} AuxVars[] AssignedVars[] [2021-05-03 00:17:40,263 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:40,266 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:40,269 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:40,309 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:40,312 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:40,329 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:40,342 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:41,041 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:41,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246311796] [2021-05-03 00:17:41,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [246311796] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:41,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:41,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-03 00:17:41,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732907758] [2021-05-03 00:17:41,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-03 00:17:41,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:41,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-03 00:17:41,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2021-05-03 00:17:41,044 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-05-03 00:17:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:42,137 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-05-03 00:17:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-03 00:17:42,138 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 22 states have internal predecessors, (26), 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 30 [2021-05-03 00:17:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:42,139 INFO L225 Difference]: With dead ends: 43 [2021-05-03 00:17:42,139 INFO L226 Difference]: Without dead ends: 35 [2021-05-03 00:17:42,140 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1391.2ms TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2021-05-03 00:17:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-03 00:17:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-03 00:17:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 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) [2021-05-03 00:17:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-05-03 00:17:42,148 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 30 [2021-05-03 00:17:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:42,148 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-05-03 00:17:42,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-05-03 00:17:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-05-03 00:17:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-03 00:17:42,149 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:42,149 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:42,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-03 00:17:42,150 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:42,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:42,150 INFO L82 PathProgramCache]: Analyzing trace with hash -379862425, now seen corresponding path program 6 times [2021-05-03 00:17:42,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:42,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733017358] [2021-05-03 00:17:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:42,163 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_84 1) 4294967296) (mod v_main_~n~0_28 4294967296)) (= 0 (mod v_main_~l~0_84 2))) InVars {main_~l~0=v_main_~l~0_84, main_~n~0=v_main_~n~0_28} OutVars{main_~l~0=v_main_~l~0_84, main_~n~0=v_main_~n~0_28} AuxVars[] AssignedVars[] [2021-05-03 00:17:42,166 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:42,188 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:42,191 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:42,223 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:42,227 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:42,230 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:42,246 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_86 2) 0)) (< (mod (+ v_main_~l~0_86 1) 4294967296) (mod v_main_~n~0_29 4294967296))) InVars {main_~l~0=v_main_~l~0_86, main_~n~0=v_main_~n~0_29} OutVars{main_~l~0=v_main_~l~0_86, main_~n~0=v_main_~n~0_29} AuxVars[] AssignedVars[] [2021-05-03 00:17:42,249 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:42,251 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:42,254 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:42,284 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:42,288 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:42,304 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:42,316 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:42,320 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_88 2) 0)) (< (mod v_main_~l~0_88 4294967296) (mod v_main_~n~0_30 4294967296))) InVars {main_~l~0=v_main_~l~0_88, main_~n~0=v_main_~n~0_30} OutVars{main_~l~0=v_main_~l~0_88, main_~n~0=v_main_~n~0_30} AuxVars[] AssignedVars[] [2021-05-03 00:17:42,323 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:42,324 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:42,327 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:42,339 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:42,342 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:42,360 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:42,375 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_90 2) 0) (< (mod v_main_~l~0_90 4294967296) (mod v_main_~n~0_31 4294967296))) InVars {main_~l~0=v_main_~l~0_90, main_~n~0=v_main_~n~0_31} OutVars{main_~l~0=v_main_~l~0_90, main_~n~0=v_main_~n~0_31} AuxVars[] AssignedVars[] [2021-05-03 00:17:42,379 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:42,380 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:42,384 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:42,426 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:42,431 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:42,449 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:42,460 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:42,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:43,262 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:43,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733017358] [2021-05-03 00:17:43,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [733017358] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:43,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:43,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-03 00:17:43,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10692597] [2021-05-03 00:17:43,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-03 00:17:43,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:43,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-03 00:17:43,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2021-05-03 00:17:43,267 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 27 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 25 states have internal predecessors, (29), 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) [2021-05-03 00:17:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:44,569 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-05-03 00:17:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-03 00:17:44,583 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 25 states have internal predecessors, (29), 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 33 [2021-05-03 00:17:44,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:44,585 INFO L225 Difference]: With dead ends: 46 [2021-05-03 00:17:44,585 INFO L226 Difference]: Without dead ends: 38 [2021-05-03 00:17:44,586 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1620.1ms TimeCoverageRelationStatistics Valid=160, Invalid=2192, Unknown=0, NotChecked=0, Total=2352 [2021-05-03 00:17:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-03 00:17:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-03 00:17:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 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) [2021-05-03 00:17:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-05-03 00:17:44,599 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 33 [2021-05-03 00:17:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:44,599 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-05-03 00:17:44,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 25 states have internal predecessors, (29), 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) [2021-05-03 00:17:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-05-03 00:17:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-03 00:17:44,602 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:44,603 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:44,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-03 00:17:44,603 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:44,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1130274152, now seen corresponding path program 7 times [2021-05-03 00:17:44,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:44,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648384946] [2021-05-03 00:17:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:44,617 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_101 1) 4294967296) (mod v_main_~n~0_32 4294967296)) (= 0 (mod v_main_~l~0_101 2))) InVars {main_~l~0=v_main_~l~0_101, main_~n~0=v_main_~n~0_32} OutVars{main_~l~0=v_main_~l~0_101, main_~n~0=v_main_~n~0_32} AuxVars[] AssignedVars[] [2021-05-03 00:17:44,620 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:44,643 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:44,646 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:44,764 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:44,768 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:44,771 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:44,783 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_103 1) 4294967296) (mod v_main_~n~0_33 4294967296)) (not (= (mod v_main_~l~0_103 2) 0))) InVars {main_~l~0=v_main_~l~0_103, main_~n~0=v_main_~n~0_33} OutVars{main_~l~0=v_main_~l~0_103, main_~n~0=v_main_~n~0_33} AuxVars[] AssignedVars[] [2021-05-03 00:17:44,788 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:44,790 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:44,795 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:44,814 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:44,818 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:44,833 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:44,850 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:44,852 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_105 4294967296) (mod v_main_~n~0_34 4294967296)) (not (= (mod v_main_~l~0_105 2) 0))) InVars {main_~l~0=v_main_~l~0_105, main_~n~0=v_main_~n~0_34} OutVars{main_~l~0=v_main_~l~0_105, main_~n~0=v_main_~n~0_34} AuxVars[] AssignedVars[] [2021-05-03 00:17:44,857 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:44,859 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:44,863 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:45,713 WARN L205 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 1 [2021-05-03 00:17:45,716 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:45,719 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:45,777 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:45,805 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_107 2) 0) (< (mod v_main_~l~0_107 4294967296) (mod v_main_~n~0_35 4294967296))) InVars {main_~l~0=v_main_~l~0_107, main_~n~0=v_main_~n~0_35} OutVars{main_~l~0=v_main_~l~0_107, main_~n~0=v_main_~n~0_35} AuxVars[] AssignedVars[] [2021-05-03 00:17:45,808 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:45,838 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:45,841 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:46,409 WARN L205 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:17:46,464 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:46,467 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:46,469 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:46,479 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:46,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:47,368 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:47,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648384946] [2021-05-03 00:17:47,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1648384946] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:47,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:47,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-03 00:17:47,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003013408] [2021-05-03 00:17:47,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-03 00:17:47,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:47,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-03 00:17:47,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2021-05-03 00:17:47,371 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 30 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 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) [2021-05-03 00:17:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:48,938 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-05-03 00:17:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-03 00:17:48,939 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 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 36 [2021-05-03 00:17:48,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:48,939 INFO L225 Difference]: With dead ends: 49 [2021-05-03 00:17:48,940 INFO L226 Difference]: Without dead ends: 41 [2021-05-03 00:17:48,941 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1917.0ms TimeCoverageRelationStatistics Valid=181, Invalid=2789, Unknown=0, NotChecked=0, Total=2970 [2021-05-03 00:17:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-03 00:17:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-03 00:17:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 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) [2021-05-03 00:17:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-05-03 00:17:48,947 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 36 [2021-05-03 00:17:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:48,947 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-05-03 00:17:48,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 28 states have internal predecessors, (32), 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) [2021-05-03 00:17:48,947 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-05-03 00:17:48,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 00:17:48,948 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:48,948 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:48,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-03 00:17:48,948 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:48,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1178702405, now seen corresponding path program 8 times [2021-05-03 00:17:48,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:48,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144153209] [2021-05-03 00:17:48,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:48,968 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_119 1) 4294967296) (mod v_main_~n~0_36 4294967296)) (= (mod v_main_~l~0_119 2) 0)) InVars {main_~l~0=v_main_~l~0_119, main_~n~0=v_main_~n~0_36} OutVars{main_~l~0=v_main_~l~0_119, main_~n~0=v_main_~n~0_36} AuxVars[] AssignedVars[] [2021-05-03 00:17:48,971 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:48,973 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:48,978 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:49,013 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:49,017 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:49,037 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:49,057 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_121 1) 4294967296) (mod v_main_~n~0_37 4294967296)) (not (= (mod v_main_~l~0_121 2) 0))) InVars {main_~l~0=v_main_~l~0_121, main_~n~0=v_main_~n~0_37} OutVars{main_~l~0=v_main_~l~0_121, main_~n~0=v_main_~n~0_37} AuxVars[] AssignedVars[] [2021-05-03 00:17:49,060 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:49,082 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:49,084 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:49,102 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:49,105 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:49,108 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:49,120 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:49,131 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_123 2) 0)) (< (mod v_main_~l~0_123 4294967296) (mod v_main_~n~0_38 4294967296))) InVars {main_~l~0=v_main_~l~0_123, main_~n~0=v_main_~n~0_38} OutVars{main_~l~0=v_main_~l~0_123, main_~n~0=v_main_~n~0_38} AuxVars[] AssignedVars[] [2021-05-03 00:17:49,134 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:49,136 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:49,138 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:49,160 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:49,164 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:49,181 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:49,200 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_125 4294967296) (mod v_main_~n~0_39 4294967296)) (= (mod v_main_~l~0_125 2) 0)) InVars {main_~l~0=v_main_~l~0_125, main_~n~0=v_main_~n~0_39} OutVars{main_~l~0=v_main_~l~0_125, main_~n~0=v_main_~n~0_39} AuxVars[] AssignedVars[] [2021-05-03 00:17:49,204 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:49,223 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:49,226 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:49,309 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:49,312 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:49,315 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:49,326 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:49,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:49,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:17:50,439 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:50,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144153209] [2021-05-03 00:17:50,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [144153209] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:50,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:50,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-03 00:17:50,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362454246] [2021-05-03 00:17:50,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-03 00:17:50,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:50,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-03 00:17:50,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1046, Unknown=0, NotChecked=0, Total=1122 [2021-05-03 00:17:50,442 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-05-03 00:17:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:52,160 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-05-03 00:17:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-03 00:17:52,161 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 states have internal predecessors, (35), 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 39 [2021-05-03 00:17:52,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:52,162 INFO L225 Difference]: With dead ends: 52 [2021-05-03 00:17:52,163 INFO L226 Difference]: Without dead ends: 44 [2021-05-03 00:17:52,165 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 2208.7ms TimeCoverageRelationStatistics Valid=208, Invalid=3574, Unknown=0, NotChecked=0, Total=3782 [2021-05-03 00:17:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-03 00:17:52,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-03 00:17:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 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) [2021-05-03 00:17:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-05-03 00:17:52,172 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 39 [2021-05-03 00:17:52,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:52,172 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-05-03 00:17:52,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-05-03 00:17:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-05-03 00:17:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-03 00:17:52,173 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:52,173 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:52,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-03 00:17:52,174 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:52,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:52,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1478106618, now seen corresponding path program 9 times [2021-05-03 00:17:52,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:52,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660674336] [2021-05-03 00:17:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:52,186 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_138 1) 4294967296) (mod v_main_~n~0_40 4294967296)) (= (mod v_main_~l~0_138 2) 0)) InVars {main_~l~0=v_main_~l~0_138, main_~n~0=v_main_~n~0_40} OutVars{main_~l~0=v_main_~l~0_138, main_~n~0=v_main_~n~0_40} AuxVars[] AssignedVars[] [2021-05-03 00:17:52,191 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:52,192 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:52,196 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:52,227 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:52,231 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:52,247 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:52,261 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_140 1) 4294967296) (mod v_main_~n~0_41 4294967296)) (not (= (mod v_main_~l~0_140 2) 0))) InVars {main_~l~0=v_main_~l~0_140, main_~n~0=v_main_~n~0_41} OutVars{main_~l~0=v_main_~l~0_140, main_~n~0=v_main_~n~0_41} AuxVars[] AssignedVars[] [2021-05-03 00:17:52,263 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:52,282 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:52,284 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:52,297 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:52,300 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:52,303 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:52,313 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:52,316 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_142 2) 0)) (< (mod v_main_~l~0_142 4294967296) (mod v_main_~n~0_42 4294967296))) InVars {main_~l~0=v_main_~l~0_142, main_~n~0=v_main_~n~0_42} OutVars{main_~l~0=v_main_~l~0_142, main_~n~0=v_main_~n~0_42} AuxVars[] AssignedVars[] [2021-05-03 00:17:52,318 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:52,320 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:52,322 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:52,339 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:52,343 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:52,359 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:52,373 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_144 4294967296) (mod v_main_~n~0_43 4294967296)) (= (mod v_main_~l~0_144 2) 0)) InVars {main_~l~0=v_main_~l~0_144, main_~n~0=v_main_~n~0_43} OutVars{main_~l~0=v_main_~l~0_144, main_~n~0=v_main_~n~0_43} AuxVars[] AssignedVars[] [2021-05-03 00:17:52,375 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:52,377 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:52,379 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:52,411 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:52,415 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:52,430 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:52,440 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:52,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:53,516 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:53,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660674336] [2021-05-03 00:17:53,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [660674336] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:53,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:53,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-03 00:17:53,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706763768] [2021-05-03 00:17:53,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-03 00:17:53,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:53,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-03 00:17:53,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1181, Unknown=0, NotChecked=0, Total=1260 [2021-05-03 00:17:53,519 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 36 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 34 states have internal predecessors, (38), 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) [2021-05-03 00:17:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:55,600 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2021-05-03 00:17:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-03 00:17:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 34 states have internal predecessors, (38), 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 42 [2021-05-03 00:17:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:55,603 INFO L225 Difference]: With dead ends: 55 [2021-05-03 00:17:55,603 INFO L226 Difference]: Without dead ends: 47 [2021-05-03 00:17:55,604 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 2541.1ms TimeCoverageRelationStatistics Valid=223, Invalid=4199, Unknown=0, NotChecked=0, Total=4422 [2021-05-03 00:17:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-03 00:17:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-03 00:17:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 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) [2021-05-03 00:17:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-05-03 00:17:55,610 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2021-05-03 00:17:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:55,610 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-05-03 00:17:55,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 34 states have internal predecessors, (38), 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) [2021-05-03 00:17:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-05-03 00:17:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-03 00:17:55,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:55,611 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:55,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-03 00:17:55,611 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:55,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1393065053, now seen corresponding path program 10 times [2021-05-03 00:17:55,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:55,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211439315] [2021-05-03 00:17:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:55,631 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_158 2) 0) (< (mod (+ v_main_~l~0_158 1) 4294967296) (mod v_main_~n~0_44 4294967296))) InVars {main_~l~0=v_main_~l~0_158, main_~n~0=v_main_~n~0_44} OutVars{main_~l~0=v_main_~l~0_158, main_~n~0=v_main_~n~0_44} AuxVars[] AssignedVars[] [2021-05-03 00:17:55,634 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:55,636 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:55,638 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:55,695 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:55,699 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:55,718 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:55,740 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_160 1) 4294967296) (mod v_main_~n~0_45 4294967296)) (not (= (mod v_main_~l~0_160 2) 0))) InVars {main_~l~0=v_main_~l~0_160, main_~n~0=v_main_~n~0_45} OutVars{main_~l~0=v_main_~l~0_160, main_~n~0=v_main_~n~0_45} AuxVars[] AssignedVars[] [2021-05-03 00:17:55,745 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:55,768 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:55,772 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:55,787 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:55,790 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:55,793 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:55,806 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:55,812 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_162 4294967296) (mod v_main_~n~0_46 4294967296)) (not (= (mod v_main_~l~0_162 2) 0))) InVars {main_~l~0=v_main_~l~0_162, main_~n~0=v_main_~n~0_46} OutVars{main_~l~0=v_main_~l~0_162, main_~n~0=v_main_~n~0_46} AuxVars[] AssignedVars[] [2021-05-03 00:17:55,815 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:55,816 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:55,823 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:55,839 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:55,843 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:55,860 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:55,876 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_164 4294967296) (mod v_main_~n~0_47 4294967296)) (= (mod v_main_~l~0_164 2) 0)) InVars {main_~l~0=v_main_~l~0_164, main_~n~0=v_main_~n~0_47} OutVars{main_~l~0=v_main_~l~0_164, main_~n~0=v_main_~n~0_47} AuxVars[] AssignedVars[] [2021-05-03 00:17:55,879 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:55,901 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:55,904 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:56,022 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:17:56,026 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:17:56,029 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:56,040 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:56,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:17:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:17:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:17:57,547 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:17:57,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211439315] [2021-05-03 00:17:57,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1211439315] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:17:57,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:17:57,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-05-03 00:17:57,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424315474] [2021-05-03 00:17:57,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-03 00:17:57,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:17:57,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-03 00:17:57,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1396, Unknown=0, NotChecked=0, Total=1482 [2021-05-03 00:17:57,550 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 39 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 37 states have internal predecessors, (41), 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) [2021-05-03 00:17:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:17:59,609 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-05-03 00:17:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-03 00:17:59,610 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 37 states have internal predecessors, (41), 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 45 [2021-05-03 00:17:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:17:59,610 INFO L225 Difference]: With dead ends: 58 [2021-05-03 00:17:59,610 INFO L226 Difference]: Without dead ends: 50 [2021-05-03 00:17:59,612 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 2916.1ms TimeCoverageRelationStatistics Valid=244, Invalid=5012, Unknown=0, NotChecked=0, Total=5256 [2021-05-03 00:17:59,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-03 00:17:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-03 00:17:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 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) [2021-05-03 00:17:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-05-03 00:17:59,619 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 45 [2021-05-03 00:17:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:17:59,619 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-05-03 00:17:59,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 37 states have internal predecessors, (41), 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) [2021-05-03 00:17:59,619 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-05-03 00:17:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 00:17:59,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:17:59,620 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:17:59,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-03 00:17:59,620 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:17:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:17:59,620 INFO L82 PathProgramCache]: Analyzing trace with hash -419608612, now seen corresponding path program 11 times [2021-05-03 00:17:59,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:17:59,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444943564] [2021-05-03 00:17:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:17:59,637 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_179 2) 0) (< (mod (+ v_main_~l~0_179 1) 4294967296) (mod v_main_~n~0_48 4294967296))) InVars {main_~l~0=v_main_~l~0_179, main_~n~0=v_main_~n~0_48} OutVars{main_~l~0=v_main_~l~0_179, main_~n~0=v_main_~n~0_48} AuxVars[] AssignedVars[] [2021-05-03 00:17:59,639 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:59,641 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:59,647 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:59,760 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:59,763 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:59,781 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:59,802 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_181 1) 4294967296) (mod v_main_~n~0_49 4294967296)) (not (= (mod v_main_~l~0_181 2) 0))) InVars {main_~l~0=v_main_~l~0_181, main_~n~0=v_main_~n~0_49} OutVars{main_~l~0=v_main_~l~0_181, main_~n~0=v_main_~n~0_49} AuxVars[] AssignedVars[] [2021-05-03 00:17:59,832 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:17:59,853 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:59,856 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:59,887 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:17:59,890 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:17:59,892 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:17:59,904 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:17:59,907 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_183 2) 0)) (< (mod v_main_~l~0_183 4294967296) (mod v_main_~n~0_50 4294967296))) InVars {main_~l~0=v_main_~l~0_183, main_~n~0=v_main_~n~0_50} OutVars{main_~l~0=v_main_~l~0_183, main_~n~0=v_main_~n~0_50} AuxVars[] AssignedVars[] [2021-05-03 00:17:59,915 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:59,936 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:59,939 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:59,958 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:17:59,961 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:17:59,964 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:17:59,979 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_185 2) 0) (< (mod v_main_~l~0_185 4294967296) (mod v_main_~n~0_51 4294967296))) InVars {main_~l~0=v_main_~l~0_185, main_~n~0=v_main_~n~0_51} OutVars{main_~l~0=v_main_~l~0_185, main_~n~0=v_main_~n~0_51} AuxVars[] AssignedVars[] [2021-05-03 00:17:59,981 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:17:59,983 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:17:59,985 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:00,078 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:18:00,081 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:18:00,099 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:00,112 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:00,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:18:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:18:01,741 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:18:01,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444943564] [2021-05-03 00:18:01,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [444943564] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:18:01,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:18:01,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-03 00:18:01,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923021596] [2021-05-03 00:18:01,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-03 00:18:01,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:18:01,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-03 00:18:01,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1629, Unknown=0, NotChecked=0, Total=1722 [2021-05-03 00:18:01,743 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 42 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 40 states have internal predecessors, (44), 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) [2021-05-03 00:18:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:18:04,135 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2021-05-03 00:18:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-03 00:18:04,136 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 40 states have internal predecessors, (44), 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 48 [2021-05-03 00:18:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:18:04,136 INFO L225 Difference]: With dead ends: 61 [2021-05-03 00:18:04,136 INFO L226 Difference]: Without dead ends: 53 [2021-05-03 00:18:04,138 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 3273.9ms TimeCoverageRelationStatistics Valid=265, Invalid=5897, Unknown=0, NotChecked=0, Total=6162 [2021-05-03 00:18:04,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-03 00:18:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-05-03 00:18:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 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) [2021-05-03 00:18:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-05-03 00:18:04,144 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 48 [2021-05-03 00:18:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:18:04,144 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-05-03 00:18:04,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 40 states have internal predecessors, (44), 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) [2021-05-03 00:18:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-05-03 00:18:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-03 00:18:04,145 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:18:04,145 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:18:04,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-03 00:18:04,146 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:18:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:18:04,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1572964735, now seen corresponding path program 12 times [2021-05-03 00:18:04,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:18:04,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774881695] [2021-05-03 00:18:04,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:18:04,156 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_201 1) 4294967296) (mod v_main_~n~0_52 4294967296)) (= (mod v_main_~l~0_201 2) 0)) InVars {main_~l~0=v_main_~l~0_201, main_~n~0=v_main_~n~0_52} OutVars{main_~l~0=v_main_~l~0_201, main_~n~0=v_main_~n~0_52} AuxVars[] AssignedVars[] [2021-05-03 00:18:04,159 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:04,178 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:04,181 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:04,312 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:04,316 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:04,318 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:04,332 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_203 2) 0)) (< (mod (+ v_main_~l~0_203 1) 4294967296) (mod v_main_~n~0_53 4294967296))) InVars {main_~l~0=v_main_~l~0_203, main_~n~0=v_main_~n~0_53} OutVars{main_~l~0=v_main_~l~0_203, main_~n~0=v_main_~n~0_53} AuxVars[] AssignedVars[] [2021-05-03 00:18:04,335 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:04,354 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:04,357 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:04,367 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:18:04,371 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:18:04,374 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:04,385 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:04,388 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_205 2) 0)) (< (mod v_main_~l~0_205 4294967296) (mod v_main_~n~0_54 4294967296))) InVars {main_~l~0=v_main_~l~0_205, main_~n~0=v_main_~n~0_54} OutVars{main_~l~0=v_main_~l~0_205, main_~n~0=v_main_~n~0_54} AuxVars[] AssignedVars[] [2021-05-03 00:18:04,390 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:04,410 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:04,413 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:04,422 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:04,426 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:04,428 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:04,442 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_207 2) 0) (< (mod v_main_~l~0_207 4294967296) (mod v_main_~n~0_55 4294967296))) InVars {main_~l~0=v_main_~l~0_207, main_~n~0=v_main_~n~0_55} OutVars{main_~l~0=v_main_~l~0_207, main_~n~0=v_main_~n~0_55} AuxVars[] AssignedVars[] [2021-05-03 00:18:04,444 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:04,446 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:04,448 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:04,476 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:18:04,479 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:18:04,494 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:04,505 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:18:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:18:04,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:18:06,559 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:18:06,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774881695] [2021-05-03 00:18:06,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1774881695] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:18:06,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:18:06,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-03 00:18:06,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416943457] [2021-05-03 00:18:06,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-03 00:18:06,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:18:06,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-03 00:18:06,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1966, Unknown=0, NotChecked=0, Total=2070 [2021-05-03 00:18:06,561 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 44 states have internal predecessors, (47), 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) [2021-05-03 00:18:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:18:09,346 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-05-03 00:18:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-03 00:18:09,347 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 44 states have internal predecessors, (47), 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 51 [2021-05-03 00:18:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:18:09,348 INFO L225 Difference]: With dead ends: 64 [2021-05-03 00:18:09,348 INFO L226 Difference]: Without dead ends: 56 [2021-05-03 00:18:09,351 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 4005.7ms TimeCoverageRelationStatistics Valid=292, Invalid=7018, Unknown=0, NotChecked=0, Total=7310 [2021-05-03 00:18:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-03 00:18:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-03 00:18:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 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) [2021-05-03 00:18:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-05-03 00:18:09,358 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 51 [2021-05-03 00:18:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:18:09,358 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-05-03 00:18:09,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 44 states have internal predecessors, (47), 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) [2021-05-03 00:18:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-05-03 00:18:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-03 00:18:09,359 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:18:09,359 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:18:09,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-03 00:18:09,359 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:18:09,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:18:09,359 INFO L82 PathProgramCache]: Analyzing trace with hash 308150334, now seen corresponding path program 13 times [2021-05-03 00:18:09,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:18:09,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913326151] [2021-05-03 00:18:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:18:09,372 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_224 1) 4294967296) (mod v_main_~n~0_56 4294967296)) (= (mod v_main_~l~0_224 2) 0)) InVars {main_~l~0=v_main_~l~0_224, main_~n~0=v_main_~n~0_56} OutVars{main_~l~0=v_main_~l~0_224, main_~n~0=v_main_~n~0_56} AuxVars[] AssignedVars[] [2021-05-03 00:18:09,375 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:09,400 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:09,404 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:09,436 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:09,439 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:09,442 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:09,468 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_226 2) 0)) (< (mod (+ v_main_~l~0_226 1) 4294967296) (mod v_main_~n~0_57 4294967296))) InVars {main_~l~0=v_main_~l~0_226, main_~n~0=v_main_~n~0_57} OutVars{main_~l~0=v_main_~l~0_226, main_~n~0=v_main_~n~0_57} AuxVars[] AssignedVars[] [2021-05-03 00:18:09,487 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:09,489 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:09,492 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:10,210 WARN L205 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 1 [2021-05-03 00:18:10,212 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:18:10,216 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:18:10,234 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:10,249 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:10,253 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_228 2) 0)) (< (mod v_main_~l~0_228 4294967296) (mod v_main_~n~0_58 4294967296))) InVars {main_~l~0=v_main_~l~0_228, main_~n~0=v_main_~n~0_58} OutVars{main_~l~0=v_main_~l~0_228, main_~n~0=v_main_~n~0_58} AuxVars[] AssignedVars[] [2021-05-03 00:18:10,256 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:10,258 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:10,261 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:10,294 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:10,297 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:10,311 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:10,324 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_230 4294967296) (mod v_main_~n~0_59 4294967296)) (= (mod v_main_~l~0_230 2) 0)) InVars {main_~l~0=v_main_~l~0_230, main_~n~0=v_main_~n~0_59} OutVars{main_~l~0=v_main_~l~0_230, main_~n~0=v_main_~n~0_59} AuxVars[] AssignedVars[] [2021-05-03 00:18:10,328 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:10,329 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:10,335 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:10,363 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:18:10,366 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:18:10,382 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:10,391 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:10,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:18:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:18:12,807 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:18:12,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913326151] [2021-05-03 00:18:12,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1913326151] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:18:12,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:18:12,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-03 00:18:12,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413222623] [2021-05-03 00:18:12,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-03 00:18:12,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:18:12,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-03 00:18:12,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2149, Unknown=0, NotChecked=0, Total=2256 [2021-05-03 00:18:12,809 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 48 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 46 states have internal predecessors, (50), 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) [2021-05-03 00:18:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:18:15,818 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-05-03 00:18:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-03 00:18:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 46 states have internal predecessors, (50), 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 54 [2021-05-03 00:18:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:18:15,820 INFO L225 Difference]: With dead ends: 67 [2021-05-03 00:18:15,820 INFO L226 Difference]: Without dead ends: 59 [2021-05-03 00:18:15,822 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 4531.7ms TimeCoverageRelationStatistics Valid=307, Invalid=7883, Unknown=0, NotChecked=0, Total=8190 [2021-05-03 00:18:15,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-03 00:18:15,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-05-03 00:18:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 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) [2021-05-03 00:18:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-05-03 00:18:15,835 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 54 [2021-05-03 00:18:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:18:15,835 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-05-03 00:18:15,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 46 states have internal predecessors, (50), 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) [2021-05-03 00:18:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-05-03 00:18:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-03 00:18:15,836 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:18:15,836 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:18:15,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-03 00:18:15,836 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:18:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:18:15,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1901114657, now seen corresponding path program 14 times [2021-05-03 00:18:15,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:18:15,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357469682] [2021-05-03 00:18:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:18:15,883 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_248 2) 0) (< (mod (+ v_main_~l~0_248 1) 4294967296) (mod v_main_~n~0_60 4294967296))) InVars {main_~l~0=v_main_~l~0_248, main_~n~0=v_main_~n~0_60} OutVars{main_~l~0=v_main_~l~0_248, main_~n~0=v_main_~n~0_60} AuxVars[] AssignedVars[] [2021-05-03 00:18:15,887 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:15,888 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:15,892 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:15,975 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:15,979 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:15,995 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:16,011 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_250 2) 0)) (< (mod (+ v_main_~l~0_250 1) 4294967296) (mod v_main_~n~0_61 4294967296))) InVars {main_~l~0=v_main_~l~0_250, main_~n~0=v_main_~n~0_61} OutVars{main_~l~0=v_main_~l~0_250, main_~n~0=v_main_~n~0_61} AuxVars[] AssignedVars[] [2021-05-03 00:18:16,014 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:16,015 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:16,020 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:16,041 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:18:16,046 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:18:16,071 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:16,088 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:16,119 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_252 2) 0)) (< (mod v_main_~l~0_252 4294967296) (mod v_main_~n~0_62 4294967296))) InVars {main_~l~0=v_main_~l~0_252, main_~n~0=v_main_~n~0_62} OutVars{main_~l~0=v_main_~l~0_252, main_~n~0=v_main_~n~0_62} AuxVars[] AssignedVars[] [2021-05-03 00:18:16,122 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:16,124 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:16,127 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:16,148 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:16,153 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:16,172 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:16,189 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_254 2) 0) (< (mod v_main_~l~0_254 4294967296) (mod v_main_~n~0_63 4294967296))) InVars {main_~l~0=v_main_~l~0_254, main_~n~0=v_main_~n~0_63} OutVars{main_~l~0=v_main_~l~0_254, main_~n~0=v_main_~n~0_63} AuxVars[] AssignedVars[] [2021-05-03 00:18:16,192 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:16,213 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:16,215 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:16,260 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:18:16,266 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:18:16,269 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:16,279 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:16,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:18:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:18:18,548 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:18:18,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357469682] [2021-05-03 00:18:18,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [357469682] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:18:18,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:18:18,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-05-03 00:18:18,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563116800] [2021-05-03 00:18:18,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-03 00:18:18,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:18:18,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-03 00:18:18,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=2436, Unknown=0, NotChecked=0, Total=2550 [2021-05-03 00:18:18,551 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 51 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 49 states have internal predecessors, (53), 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) [2021-05-03 00:18:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:18:22,736 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2021-05-03 00:18:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-03 00:18:22,738 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 49 states have internal predecessors, (53), 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 57 [2021-05-03 00:18:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:18:22,739 INFO L225 Difference]: With dead ends: 70 [2021-05-03 00:18:22,739 INFO L226 Difference]: Without dead ends: 62 [2021-05-03 00:18:22,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 5302.6ms TimeCoverageRelationStatistics Valid=328, Invalid=8984, Unknown=0, NotChecked=0, Total=9312 [2021-05-03 00:18:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-03 00:18:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-05-03 00:18:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 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) [2021-05-03 00:18:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2021-05-03 00:18:22,772 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 57 [2021-05-03 00:18:22,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:18:22,784 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2021-05-03 00:18:22,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 49 states have internal predecessors, (53), 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) [2021-05-03 00:18:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2021-05-03 00:18:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-03 00:18:22,785 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:18:22,785 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:18:22,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-03 00:18:22,785 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:18:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:18:22,786 INFO L82 PathProgramCache]: Analyzing trace with hash -260610272, now seen corresponding path program 15 times [2021-05-03 00:18:22,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:18:22,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633228713] [2021-05-03 00:18:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:18:22,800 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_273 2) 0) (< (mod (+ v_main_~l~0_273 1) 4294967296) (mod v_main_~n~0_64 4294967296))) InVars {main_~l~0=v_main_~l~0_273, main_~n~0=v_main_~n~0_64} OutVars{main_~l~0=v_main_~l~0_273, main_~n~0=v_main_~n~0_64} AuxVars[] AssignedVars[] [2021-05-03 00:18:22,804 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:22,831 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:22,835 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:22,876 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:22,881 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:22,884 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:22,902 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_275 1) 4294967296) (mod v_main_~n~0_65 4294967296)) (not (= (mod v_main_~l~0_275 2) 0))) InVars {main_~l~0=v_main_~l~0_275, main_~n~0=v_main_~n~0_65} OutVars{main_~l~0=v_main_~l~0_275, main_~n~0=v_main_~n~0_65} AuxVars[] AssignedVars[] [2021-05-03 00:18:22,905 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:22,931 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:22,934 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:22,956 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:18:22,959 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:18:22,962 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:22,976 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:22,981 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_277 2) 0)) (< (mod v_main_~l~0_277 4294967296) (mod v_main_~n~0_66 4294967296))) InVars {main_~l~0=v_main_~l~0_277, main_~n~0=v_main_~n~0_66} OutVars{main_~l~0=v_main_~l~0_277, main_~n~0=v_main_~n~0_66} AuxVars[] AssignedVars[] [2021-05-03 00:18:22,985 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:22,987 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:22,990 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:23,016 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:23,021 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:23,042 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:23,061 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_279 4294967296) (mod v_main_~n~0_67 4294967296)) (= (mod v_main_~l~0_279 2) 0)) InVars {main_~l~0=v_main_~l~0_279, main_~n~0=v_main_~n~0_67} OutVars{main_~l~0=v_main_~l~0_279, main_~n~0=v_main_~n~0_67} AuxVars[] AssignedVars[] [2021-05-03 00:18:23,064 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:23,066 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:23,069 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:23,103 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:18:23,107 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:18:23,127 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:23,140 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:23,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:18:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:18:26,154 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:18:26,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633228713] [2021-05-03 00:18:26,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [633228713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:18:26,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:18:26,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-03 00:18:26,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079904329] [2021-05-03 00:18:26,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-03 00:18:26,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:18:26,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-03 00:18:26,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2741, Unknown=0, NotChecked=0, Total=2862 [2021-05-03 00:18:26,156 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 54 states, 54 states have (on average 1.037037037037037) internal successors, (56), 52 states have internal predecessors, (56), 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) [2021-05-03 00:18:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:18:31,080 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-05-03 00:18:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-03 00:18:31,081 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.037037037037037) internal successors, (56), 52 states have internal predecessors, (56), 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 60 [2021-05-03 00:18:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:18:31,082 INFO L225 Difference]: With dead ends: 73 [2021-05-03 00:18:31,082 INFO L226 Difference]: Without dead ends: 65 [2021-05-03 00:18:31,083 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 6478.0ms TimeCoverageRelationStatistics Valid=349, Invalid=10157, Unknown=0, NotChecked=0, Total=10506 [2021-05-03 00:18:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-03 00:18:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-03 00:18:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 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) [2021-05-03 00:18:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-05-03 00:18:31,099 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 60 [2021-05-03 00:18:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:18:31,099 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-05-03 00:18:31,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.037037037037037) internal successors, (56), 52 states have internal predecessors, (56), 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) [2021-05-03 00:18:31,099 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-05-03 00:18:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-03 00:18:31,100 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:18:31,100 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:18:31,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-03 00:18:31,100 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:18:31,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:18:31,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2092622013, now seen corresponding path program 16 times [2021-05-03 00:18:31,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:18:31,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453181711] [2021-05-03 00:18:31,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:18:31,115 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_299 1) 4294967296) (mod v_main_~n~0_68 4294967296)) (= (mod v_main_~l~0_299 2) 0)) InVars {main_~l~0=v_main_~l~0_299, main_~n~0=v_main_~n~0_68} OutVars{main_~l~0=v_main_~l~0_299, main_~n~0=v_main_~n~0_68} AuxVars[] AssignedVars[] [2021-05-03 00:18:31,118 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:31,119 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:31,122 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:31,248 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:31,252 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:31,270 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:31,288 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_301 1) 4294967296) (mod v_main_~n~0_69 4294967296)) (not (= 0 (mod v_main_~l~0_301 2)))) InVars {main_~l~0=v_main_~l~0_301, main_~n~0=v_main_~n~0_69} OutVars{main_~l~0=v_main_~l~0_301, main_~n~0=v_main_~n~0_69} AuxVars[] AssignedVars[] [2021-05-03 00:18:31,304 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:31,307 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:31,313 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:31,339 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:18:31,342 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:18:31,358 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:31,377 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:31,380 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_303 2) 0)) (< (mod v_main_~l~0_303 4294967296) (mod v_main_~n~0_70 4294967296))) InVars {main_~l~0=v_main_~l~0_303, main_~n~0=v_main_~n~0_70} OutVars{main_~l~0=v_main_~l~0_303, main_~n~0=v_main_~n~0_70} AuxVars[] AssignedVars[] [2021-05-03 00:18:31,382 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:31,402 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:31,405 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:31,415 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:31,419 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:31,422 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:31,464 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_305 4294967296) (mod v_main_~n~0_71 4294967296)) (= (mod v_main_~l~0_305 2) 0)) InVars {main_~l~0=v_main_~l~0_305, main_~n~0=v_main_~n~0_71} OutVars{main_~l~0=v_main_~l~0_305, main_~n~0=v_main_~n~0_71} AuxVars[] AssignedVars[] [2021-05-03 00:18:31,470 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:31,502 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:31,506 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:32,071 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:18:32,073 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:18:32,077 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:18:32,080 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:32,092 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:18:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:18:32,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:18:35,415 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:18:35,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453181711] [2021-05-03 00:18:35,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [453181711] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:18:35,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:18:35,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-03 00:18:35,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573144965] [2021-05-03 00:18:35,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-03 00:18:35,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:18:35,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-03 00:18:35,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=3174, Unknown=0, NotChecked=0, Total=3306 [2021-05-03 00:18:35,420 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 56 states have internal predecessors, (59), 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) [2021-05-03 00:18:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:18:41,606 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2021-05-03 00:18:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-03 00:18:41,607 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 56 states have internal predecessors, (59), 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 63 [2021-05-03 00:18:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:18:41,608 INFO L225 Difference]: With dead ends: 76 [2021-05-03 00:18:41,608 INFO L226 Difference]: Without dead ends: 68 [2021-05-03 00:18:41,609 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 7651.0ms TimeCoverageRelationStatistics Valid=376, Invalid=11614, Unknown=0, NotChecked=0, Total=11990 [2021-05-03 00:18:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-03 00:18:41,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-05-03 00:18:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 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) [2021-05-03 00:18:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-05-03 00:18:41,616 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 63 [2021-05-03 00:18:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:18:41,616 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-05-03 00:18:41,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 56 states have internal predecessors, (59), 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) [2021-05-03 00:18:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-05-03 00:18:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-03 00:18:41,617 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:18:41,617 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:18:41,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-03 00:18:41,617 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:18:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:18:41,618 INFO L82 PathProgramCache]: Analyzing trace with hash -2035508094, now seen corresponding path program 17 times [2021-05-03 00:18:41,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:18:41,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630422630] [2021-05-03 00:18:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:18:41,635 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_326 1) 4294967296) (mod v_main_~n~0_72 4294967296)) (= (mod v_main_~l~0_326 2) 0)) InVars {main_~l~0=v_main_~l~0_326, main_~n~0=v_main_~n~0_72} OutVars{main_~l~0=v_main_~l~0_326, main_~n~0=v_main_~n~0_72} AuxVars[] AssignedVars[] [2021-05-03 00:18:41,638 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:41,667 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:41,671 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:41,857 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-03 00:18:41,961 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:41,966 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:41,969 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:41,990 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_328 1) 4294967296) (mod v_main_~n~0_73 4294967296)) (not (= (mod v_main_~l~0_328 2) 0))) InVars {main_~l~0=v_main_~l~0_328, main_~n~0=v_main_~n~0_73} OutVars{main_~l~0=v_main_~l~0_328, main_~n~0=v_main_~n~0_73} AuxVars[] AssignedVars[] [2021-05-03 00:18:41,992 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:42,018 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:42,030 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:42,056 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:18:42,059 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:18:42,062 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:42,079 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:42,088 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_330 2) 0)) (< (mod v_main_~l~0_330 4294967296) (mod v_main_~n~0_74 4294967296))) InVars {main_~l~0=v_main_~l~0_330, main_~n~0=v_main_~n~0_74} OutVars{main_~l~0=v_main_~l~0_330, main_~n~0=v_main_~n~0_74} AuxVars[] AssignedVars[] [2021-05-03 00:18:42,105 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:42,107 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:42,112 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:42,139 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:42,144 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:42,166 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:42,186 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_332 4294967296) (mod v_main_~n~0_75 4294967296)) (= (mod v_main_~l~0_332 2) 0)) InVars {main_~l~0=v_main_~l~0_332, main_~n~0=v_main_~n~0_75} OutVars{main_~l~0=v_main_~l~0_332, main_~n~0=v_main_~n~0_75} AuxVars[] AssignedVars[] [2021-05-03 00:18:42,188 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:42,189 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:42,193 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:42,388 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-03 00:18:42,409 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:18:42,412 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:18:42,434 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:42,452 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:42,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:18:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:18:47,173 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:18:47,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630422630] [2021-05-03 00:18:47,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [630422630] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:18:47,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:18:47,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-03 00:18:47,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951264219] [2021-05-03 00:18:47,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-03 00:18:47,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:18:47,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-03 00:18:47,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=3405, Unknown=0, NotChecked=0, Total=3540 [2021-05-03 00:18:47,175 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 60 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 58 states have internal predecessors, (62), 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) [2021-05-03 00:18:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:18:54,416 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2021-05-03 00:18:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-03 00:18:54,417 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 58 states have internal predecessors, (62), 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 66 [2021-05-03 00:18:54,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:18:54,418 INFO L225 Difference]: With dead ends: 79 [2021-05-03 00:18:54,418 INFO L226 Difference]: Without dead ends: 71 [2021-05-03 00:18:54,420 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 9747.4ms TimeCoverageRelationStatistics Valid=391, Invalid=12719, Unknown=0, NotChecked=0, Total=13110 [2021-05-03 00:18:54,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-03 00:18:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-05-03 00:18:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 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) [2021-05-03 00:18:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-05-03 00:18:54,426 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2021-05-03 00:18:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:18:54,426 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-05-03 00:18:54,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 58 states have internal predecessors, (62), 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) [2021-05-03 00:18:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-05-03 00:18:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-03 00:18:54,427 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:18:54,427 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:18:54,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-03 00:18:54,427 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:18:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:18:54,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1453987867, now seen corresponding path program 18 times [2021-05-03 00:18:54,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:18:54,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702754200] [2021-05-03 00:18:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:18:54,444 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_354 1) 4294967296) (mod v_main_~n~0_76 4294967296)) (= (mod v_main_~l~0_354 2) 0)) InVars {main_~l~0=v_main_~l~0_354, main_~n~0=v_main_~n~0_76} OutVars{main_~l~0=v_main_~l~0_354, main_~n~0=v_main_~n~0_76} AuxVars[] AssignedVars[] [2021-05-03 00:18:54,446 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:54,473 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:54,477 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:54,518 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:54,525 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:54,529 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:54,551 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_356 2) 0)) (< (mod (+ v_main_~l~0_356 1) 4294967296) (mod v_main_~n~0_77 4294967296))) InVars {main_~l~0=v_main_~l~0_356, main_~n~0=v_main_~n~0_77} OutVars{main_~l~0=v_main_~l~0_356, main_~n~0=v_main_~n~0_77} AuxVars[] AssignedVars[] [2021-05-03 00:18:54,553 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:18:54,555 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:54,558 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:54,581 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:18:54,586 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:18:54,610 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:18:54,630 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:54,643 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_358 2) 0)) (< (mod v_main_~l~0_358 4294967296) (mod v_main_~n~0_78 4294967296))) InVars {main_~l~0=v_main_~l~0_358, main_~n~0=v_main_~n~0_78} OutVars{main_~l~0=v_main_~l~0_358, main_~n~0=v_main_~n~0_78} AuxVars[] AssignedVars[] [2021-05-03 00:18:54,647 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:54,648 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:54,656 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:54,683 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:18:54,689 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:18:54,711 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:54,733 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_360 2) 0) (< (mod v_main_~l~0_360 4294967296) (mod v_main_~n~0_79 4294967296))) InVars {main_~l~0=v_main_~l~0_360, main_~n~0=v_main_~n~0_79} OutVars{main_~l~0=v_main_~l~0_360, main_~n~0=v_main_~n~0_79} AuxVars[] AssignedVars[] [2021-05-03 00:18:54,736 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:18:54,738 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:54,741 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:18:54,786 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:18:54,789 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:18:54,803 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:18:54,814 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:18:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:18:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:18:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:18:57,742 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:18:57,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702754200] [2021-05-03 00:18:57,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [702754200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:18:57,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:18:57,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2021-05-03 00:18:57,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085151325] [2021-05-03 00:18:57,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-03 00:18:57,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:18:57,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-03 00:18:57,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=3764, Unknown=0, NotChecked=0, Total=3906 [2021-05-03 00:18:57,744 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 63 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 61 states have internal predecessors, (65), 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) [2021-05-03 00:19:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:19:03,767 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2021-05-03 00:19:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-03 00:19:03,768 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 61 states have internal predecessors, (65), 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 69 [2021-05-03 00:19:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:19:03,769 INFO L225 Difference]: With dead ends: 82 [2021-05-03 00:19:03,769 INFO L226 Difference]: Without dead ends: 74 [2021-05-03 00:19:03,770 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3249 ImplicationChecksByTransitivity, 7110.5ms TimeCoverageRelationStatistics Valid=412, Invalid=14108, Unknown=0, NotChecked=0, Total=14520 [2021-05-03 00:19:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-03 00:19:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-03 00:19:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 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) [2021-05-03 00:19:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2021-05-03 00:19:03,776 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 69 [2021-05-03 00:19:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:19:03,778 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2021-05-03 00:19:03,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 61 states have internal predecessors, (65), 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) [2021-05-03 00:19:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2021-05-03 00:19:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-03 00:19:03,779 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:19:03,779 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:19:03,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-03 00:19:03,779 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:19:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:19:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash -880230300, now seen corresponding path program 19 times [2021-05-03 00:19:03,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:19:03,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430643157] [2021-05-03 00:19:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:19:03,800 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_383 2) 0) (< (mod (+ v_main_~l~0_383 1) 4294967296) (mod v_main_~n~0_80 4294967296))) InVars {main_~l~0=v_main_~l~0_383, main_~n~0=v_main_~n~0_80} OutVars{main_~l~0=v_main_~l~0_383, main_~n~0=v_main_~n~0_80} AuxVars[] AssignedVars[] [2021-05-03 00:19:03,803 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:19:03,832 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:03,849 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:03,907 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:19:03,913 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:19:03,918 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:19:03,960 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_385 2) 0)) (< (mod (+ v_main_~l~0_385 1) 4294967296) (mod v_main_~n~0_81 4294967296))) InVars {main_~l~0=v_main_~l~0_385, main_~n~0=v_main_~n~0_81} OutVars{main_~l~0=v_main_~l~0_385, main_~n~0=v_main_~n~0_81} AuxVars[] AssignedVars[] [2021-05-03 00:19:03,966 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:19:04,027 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:04,030 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:04,067 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:19:04,072 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:19:04,076 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:19:04,112 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:19:04,118 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_387 4294967296) (mod v_main_~n~0_82 4294967296)) (not (= (mod v_main_~l~0_387 2) 0))) InVars {main_~l~0=v_main_~l~0_387, main_~n~0=v_main_~n~0_82} OutVars{main_~l~0=v_main_~l~0_387, main_~n~0=v_main_~n~0_82} AuxVars[] AssignedVars[] [2021-05-03 00:19:04,120 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:19:04,122 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:04,126 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:04,157 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:19:04,162 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:19:04,210 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:19:04,245 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_389 2) 0) (< (mod v_main_~l~0_389 4294967296) (mod v_main_~n~0_83 4294967296))) InVars {main_~l~0=v_main_~l~0_389, main_~n~0=v_main_~n~0_83} OutVars{main_~l~0=v_main_~l~0_389, main_~n~0=v_main_~n~0_83} AuxVars[] AssignedVars[] [2021-05-03 00:19:04,248 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:19:04,277 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:04,292 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:04,336 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:19:04,341 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:19:04,345 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:19:04,370 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:19:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:19:04,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:19:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:19:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:19:04,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:19:09,696 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:19:09,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430643157] [2021-05-03 00:19:09,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [430643157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:19:09,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:19:09,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2021-05-03 00:19:09,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408814255] [2021-05-03 00:19:09,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-03 00:19:09,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:19:09,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-03 00:19:09,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=4269, Unknown=0, NotChecked=0, Total=4422 [2021-05-03 00:19:09,698 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 65 states have internal predecessors, (68), 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) [2021-05-03 00:19:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:19:19,210 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2021-05-03 00:19:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-03 00:19:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 65 states have internal predecessors, (68), 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 72 [2021-05-03 00:19:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:19:19,212 INFO L225 Difference]: With dead ends: 85 [2021-05-03 00:19:19,212 INFO L226 Difference]: Without dead ends: 77 [2021-05-03 00:19:19,213 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3665 ImplicationChecksByTransitivity, 11742.4ms TimeCoverageRelationStatistics Valid=439, Invalid=15817, Unknown=0, NotChecked=0, Total=16256 [2021-05-03 00:19:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-03 00:19:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-05-03 00:19:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 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) [2021-05-03 00:19:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-05-03 00:19:19,220 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 72 [2021-05-03 00:19:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:19:19,220 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-05-03 00:19:19,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 65 states have internal predecessors, (68), 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) [2021-05-03 00:19:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-05-03 00:19:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-03 00:19:19,221 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:19:19,221 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:19:19,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-03 00:19:19,221 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:19:19,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:19:19,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1533161223, now seen corresponding path program 20 times [2021-05-03 00:19:19,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:19:19,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690636413] [2021-05-03 00:19:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:19:19,235 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_413 2) 0) (< (mod (+ v_main_~l~0_413 1) 4294967296) (mod v_main_~n~0_84 4294967296))) InVars {main_~l~0=v_main_~l~0_413, main_~n~0=v_main_~n~0_84} OutVars{main_~l~0=v_main_~l~0_413, main_~n~0=v_main_~n~0_84} AuxVars[] AssignedVars[] [2021-05-03 00:19:19,237 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:19:19,238 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:19,240 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:19,373 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:19:19,378 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:19:19,402 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:19:19,429 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_415 2) 0)) (< (mod (+ v_main_~l~0_415 1) 4294967296) (mod v_main_~n~0_85 4294967296))) InVars {main_~l~0=v_main_~l~0_415, main_~n~0=v_main_~n~0_85} OutVars{main_~l~0=v_main_~l~0_415, main_~n~0=v_main_~n~0_85} AuxVars[] AssignedVars[] [2021-05-03 00:19:19,432 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:19:19,457 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:19,459 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:19,478 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:19:19,482 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:19:19,485 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:19:19,499 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:19:19,502 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_417 2) 0)) (< (mod v_main_~l~0_417 4294967296) (mod v_main_~n~0_86 4294967296))) InVars {main_~l~0=v_main_~l~0_417, main_~n~0=v_main_~n~0_86} OutVars{main_~l~0=v_main_~l~0_417, main_~n~0=v_main_~n~0_86} AuxVars[] AssignedVars[] [2021-05-03 00:19:19,504 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:19:19,505 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:19,507 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:19,528 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:19:19,532 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:19:19,562 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:19:19,582 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_419 2) 0) (< (mod v_main_~l~0_419 4294967296) (mod v_main_~n~0_87 4294967296))) InVars {main_~l~0=v_main_~l~0_419, main_~n~0=v_main_~n~0_87} OutVars{main_~l~0=v_main_~l~0_419, main_~n~0=v_main_~n~0_87} AuxVars[] AssignedVars[] [2021-05-03 00:19:19,584 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:19:19,590 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:19,593 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:19,741 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:19:19,745 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:19:19,769 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:19:19,789 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:19:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:19:19,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:19:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:19:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:19:26,791 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:19:26,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690636413] [2021-05-03 00:19:26,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1690636413] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:19:26,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:19:26,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2021-05-03 00:19:26,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735057431] [2021-05-03 00:19:26,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-03 00:19:26,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:19:26,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-03 00:19:26,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=4536, Unknown=0, NotChecked=0, Total=4692 [2021-05-03 00:19:26,793 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 69 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 67 states have internal predecessors, (71), 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) [2021-05-03 00:19:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:19:38,466 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-05-03 00:19:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-03 00:19:38,469 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 67 states have internal predecessors, (71), 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 75 [2021-05-03 00:19:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:19:38,470 INFO L225 Difference]: With dead ends: 88 [2021-05-03 00:19:38,470 INFO L226 Difference]: Without dead ends: 80 [2021-05-03 00:19:38,481 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3969 ImplicationChecksByTransitivity, 14915.1ms TimeCoverageRelationStatistics Valid=454, Invalid=17102, Unknown=0, NotChecked=0, Total=17556 [2021-05-03 00:19:38,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-03 00:19:38,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-03 00:19:38,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 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) [2021-05-03 00:19:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2021-05-03 00:19:38,489 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 75 [2021-05-03 00:19:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:19:38,489 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2021-05-03 00:19:38,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 67 states have internal predecessors, (71), 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) [2021-05-03 00:19:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2021-05-03 00:19:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-03 00:19:38,490 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:19:38,490 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:19:38,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-03 00:19:38,490 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:19:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:19:38,490 INFO L82 PathProgramCache]: Analyzing trace with hash 683602630, now seen corresponding path program 21 times [2021-05-03 00:19:38,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:19:38,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602585077] [2021-05-03 00:19:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:19:38,511 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_444 2) 0) (< (mod (+ v_main_~l~0_444 1) 4294967296) (mod v_main_~n~0_88 4294967296))) InVars {main_~l~0=v_main_~l~0_444, main_~n~0=v_main_~n~0_88} OutVars{main_~l~0=v_main_~l~0_444, main_~n~0=v_main_~n~0_88} AuxVars[] AssignedVars[] [2021-05-03 00:19:38,514 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:19:38,549 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:38,554 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:38,633 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:19:38,638 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:19:38,643 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:19:38,676 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_446 1) 4294967296) (mod v_main_~n~0_89 4294967296)) (not (= (mod v_main_~l~0_446 2) 0))) InVars {main_~l~0=v_main_~l~0_446, main_~n~0=v_main_~n~0_89} OutVars{main_~l~0=v_main_~l~0_446, main_~n~0=v_main_~n~0_89} AuxVars[] AssignedVars[] [2021-05-03 00:19:38,679 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:19:38,716 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:38,720 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:38,741 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:19:38,747 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:19:38,752 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:19:38,778 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:19:38,784 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_448 4294967296) (mod v_main_~n~0_90 4294967296)) (not (= (mod v_main_~l~0_448 2) 0))) InVars {main_~l~0=v_main_~l~0_448, main_~n~0=v_main_~n~0_90} OutVars{main_~l~0=v_main_~l~0_448, main_~n~0=v_main_~n~0_90} AuxVars[] AssignedVars[] [2021-05-03 00:19:38,787 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:19:38,825 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:38,830 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:38,885 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:19:38,891 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:19:38,896 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:19:38,928 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_450 4294967296) (mod v_main_~n~0_91 4294967296)) (= (mod v_main_~l~0_450 2) 0)) InVars {main_~l~0=v_main_~l~0_450, main_~n~0=v_main_~n~0_91} OutVars{main_~l~0=v_main_~l~0_450, main_~n~0=v_main_~n~0_91} AuxVars[] AssignedVars[] [2021-05-03 00:19:38,931 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:19:38,933 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:38,937 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:19:38,990 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:19:38,994 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:19:39,024 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:19:39,049 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:19:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:19:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:19:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:19:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:19:47,219 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:19:47,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602585077] [2021-05-03 00:19:47,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1602585077] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:19:47,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:19:47,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-03 00:19:47,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441873664] [2021-05-03 00:19:47,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-03 00:19:47,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:19:47,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-03 00:19:47,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=4949, Unknown=0, NotChecked=0, Total=5112 [2021-05-03 00:19:47,222 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 72 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 70 states have internal predecessors, (74), 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) [2021-05-03 00:20:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:20:00,802 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2021-05-03 00:20:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-03 00:20:00,804 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 70 states have internal predecessors, (74), 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 78 [2021-05-03 00:20:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:20:00,804 INFO L225 Difference]: With dead ends: 91 [2021-05-03 00:20:00,804 INFO L226 Difference]: Without dead ends: 83 [2021-05-03 00:20:00,806 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4356 ImplicationChecksByTransitivity, 17353.6ms TimeCoverageRelationStatistics Valid=475, Invalid=18707, Unknown=0, NotChecked=0, Total=19182 [2021-05-03 00:20:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-03 00:20:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-03 00:20:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 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) [2021-05-03 00:20:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-05-03 00:20:00,812 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 78 [2021-05-03 00:20:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:20:00,817 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-05-03 00:20:00,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 70 states have internal predecessors, (74), 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) [2021-05-03 00:20:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-05-03 00:20:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-03 00:20:00,829 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:20:00,829 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:20:00,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-03 00:20:00,829 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:20:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:20:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash -896603305, now seen corresponding path program 22 times [2021-05-03 00:20:00,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:20:00,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650436630] [2021-05-03 00:20:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:20:00,856 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_476 2) 0) (< (mod (+ v_main_~l~0_476 1) 4294967296) (mod v_main_~n~0_92 4294967296))) InVars {main_~l~0=v_main_~l~0_476, main_~n~0=v_main_~n~0_92} OutVars{main_~l~0=v_main_~l~0_476, main_~n~0=v_main_~n~0_92} AuxVars[] AssignedVars[] [2021-05-03 00:20:00,862 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:20:00,863 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:00,865 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:00,923 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:20:00,928 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:20:00,948 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:20:00,969 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_478 2) 0)) (< (mod (+ v_main_~l~0_478 1) 4294967296) (mod v_main_~n~0_93 4294967296))) InVars {main_~l~0=v_main_~l~0_478, main_~n~0=v_main_~n~0_93} OutVars{main_~l~0=v_main_~l~0_478, main_~n~0=v_main_~n~0_93} AuxVars[] AssignedVars[] [2021-05-03 00:20:00,976 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:20:01,001 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:01,005 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:01,054 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:20:01,058 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:20:01,060 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:20:01,078 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:20:01,082 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_480 4294967296) (mod v_main_~n~0_94 4294967296)) (not (= 0 (mod v_main_~l~0_480 2)))) InVars {main_~l~0=v_main_~l~0_480, main_~n~0=v_main_~n~0_94} OutVars{main_~l~0=v_main_~l~0_480, main_~n~0=v_main_~n~0_94} AuxVars[] AssignedVars[] [2021-05-03 00:20:01,098 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:20:01,151 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:01,154 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:01,188 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:20:01,193 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:20:01,200 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:20:01,229 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_482 4294967296) (mod v_main_~n~0_95 4294967296)) (= (mod v_main_~l~0_482 2) 0)) InVars {main_~l~0=v_main_~l~0_482, main_~n~0=v_main_~n~0_95} OutVars{main_~l~0=v_main_~l~0_482, main_~n~0=v_main_~n~0_95} AuxVars[] AssignedVars[] [2021-05-03 00:20:01,232 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:20:01,233 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:01,238 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:01,289 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:20:01,294 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:20:01,320 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:20:01,355 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:20:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:20:01,542 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 17 [2021-05-03 00:20:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:20:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:20:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:20:01,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:20:09,240 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:20:09,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650436630] [2021-05-03 00:20:09,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1650436630] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:20:09,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:20:09,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2021-05-03 00:20:09,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393498356] [2021-05-03 00:20:09,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-03 00:20:09,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:20:09,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-03 00:20:09,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=5526, Unknown=0, NotChecked=0, Total=5700 [2021-05-03 00:20:09,242 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 74 states have internal predecessors, (77), 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) [2021-05-03 00:20:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:20:25,530 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2021-05-03 00:20:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-03 00:20:25,533 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 74 states have internal predecessors, (77), 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 81 [2021-05-03 00:20:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:20:25,533 INFO L225 Difference]: With dead ends: 94 [2021-05-03 00:20:25,533 INFO L226 Difference]: Without dead ends: 86 [2021-05-03 00:20:25,535 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4835 ImplicationChecksByTransitivity, 18633.4ms TimeCoverageRelationStatistics Valid=502, Invalid=20668, Unknown=0, NotChecked=0, Total=21170 [2021-05-03 00:20:25,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-03 00:20:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-05-03 00:20:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 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) [2021-05-03 00:20:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2021-05-03 00:20:25,549 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 81 [2021-05-03 00:20:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:20:25,549 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2021-05-03 00:20:25,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 74 states have internal predecessors, (77), 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) [2021-05-03 00:20:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2021-05-03 00:20:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-05-03 00:20:25,550 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:20:25,550 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:20:25,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-03 00:20:25,550 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:20:25,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:20:25,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2099925928, now seen corresponding path program 23 times [2021-05-03 00:20:25,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:20:25,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055209280] [2021-05-03 00:20:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:20:25,570 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= 0 (mod v_main_~l~0_509 2)) (< (mod (+ v_main_~l~0_509 1) 4294967296) (mod v_main_~n~0_96 4294967296))) InVars {main_~l~0=v_main_~l~0_509, main_~n~0=v_main_~n~0_96} OutVars{main_~l~0=v_main_~l~0_509, main_~n~0=v_main_~n~0_96} AuxVars[] AssignedVars[] [2021-05-03 00:20:25,573 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:20:25,613 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:25,616 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:25,835 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:20:25,840 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:20:25,849 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:20:25,855 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:20:25,897 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_511 2) 0)) (< (mod (+ v_main_~l~0_511 1) 4294967296) (mod v_main_~n~0_97 4294967296))) InVars {main_~l~0=v_main_~l~0_511, main_~n~0=v_main_~n~0_97} OutVars{main_~l~0=v_main_~l~0_511, main_~n~0=v_main_~n~0_97} AuxVars[] AssignedVars[] [2021-05-03 00:20:25,900 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:20:25,902 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:25,906 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:25,998 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:20:26,004 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:20:26,038 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:20:26,071 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:20:26,097 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_513 2) 0)) (< (mod v_main_~l~0_513 4294967296) (mod v_main_~n~0_98 4294967296))) InVars {main_~l~0=v_main_~l~0_513, main_~n~0=v_main_~n~0_98} OutVars{main_~l~0=v_main_~l~0_513, main_~n~0=v_main_~n~0_98} AuxVars[] AssignedVars[] [2021-05-03 00:20:26,100 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:20:26,103 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:26,107 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:26,182 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:20:26,188 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:20:26,227 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:20:26,271 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_515 2) 0) (< (mod v_main_~l~0_515 4294967296) (mod v_main_~n~0_99 4294967296))) InVars {main_~l~0=v_main_~l~0_515, main_~n~0=v_main_~n~0_99} OutVars{main_~l~0=v_main_~l~0_515, main_~n~0=v_main_~n~0_99} AuxVars[] AssignedVars[] [2021-05-03 00:20:26,274 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:20:26,276 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:26,280 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:26,441 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:20:26,448 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:20:26,484 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:20:26,528 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:20:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:20:26,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:20:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:20:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:20:39,478 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:20:39,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055209280] [2021-05-03 00:20:39,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1055209280] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:20:39,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:20:39,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2021-05-03 00:20:39,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166571432] [2021-05-03 00:20:39,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-03 00:20:39,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:20:39,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-03 00:20:39,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=5829, Unknown=0, NotChecked=0, Total=6006 [2021-05-03 00:20:39,480 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 78 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 76 states have internal predecessors, (80), 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) [2021-05-03 00:20:57,786 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:20:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:20:59,926 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2021-05-03 00:20:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-03 00:20:59,931 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 76 states have internal predecessors, (80), 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 84 [2021-05-03 00:20:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:20:59,932 INFO L225 Difference]: With dead ends: 97 [2021-05-03 00:20:59,932 INFO L226 Difference]: Without dead ends: 89 [2021-05-03 00:20:59,934 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 26337.5ms TimeCoverageRelationStatistics Valid=517, Invalid=22133, Unknown=0, NotChecked=0, Total=22650 [2021-05-03 00:20:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-03 00:20:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-05-03 00:20:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 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) [2021-05-03 00:20:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-05-03 00:20:59,941 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 84 [2021-05-03 00:20:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:20:59,942 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-05-03 00:20:59,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 76 states have internal predecessors, (80), 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) [2021-05-03 00:20:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-05-03 00:20:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-03 00:20:59,942 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:20:59,942 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:20:59,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-03 00:20:59,943 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:20:59,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:20:59,943 INFO L82 PathProgramCache]: Analyzing trace with hash -967948491, now seen corresponding path program 24 times [2021-05-03 00:20:59,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:20:59,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603581522] [2021-05-03 00:20:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:20:59,971 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_543 2) 0) (< (mod (+ v_main_~l~0_543 1) 4294967296) (mod v_main_~n~0_100 4294967296))) InVars {main_~l~0=v_main_~l~0_543, main_~n~0=v_main_~n~0_100} OutVars{main_~l~0=v_main_~l~0_543, main_~n~0=v_main_~n~0_100} AuxVars[] AssignedVars[] [2021-05-03 00:20:59,974 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:20:59,977 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:20:59,982 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:00,075 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:21:00,085 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:21:00,135 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:21:00,184 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_545 2) 0)) (< (mod (+ v_main_~l~0_545 1) 4294967296) (mod v_main_~n~0_101 4294967296))) InVars {main_~l~0=v_main_~l~0_545, main_~n~0=v_main_~n~0_101} OutVars{main_~l~0=v_main_~l~0_545, main_~n~0=v_main_~n~0_101} AuxVars[] AssignedVars[] [2021-05-03 00:21:00,187 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:21:00,234 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:00,239 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:00,280 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:21:00,288 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:21:00,296 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:21:00,343 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:21:00,350 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_547 4294967296) (mod v_main_~n~0_102 4294967296)) (not (= (mod v_main_~l~0_547 2) 0))) InVars {main_~l~0=v_main_~l~0_547, main_~n~0=v_main_~n~0_102} OutVars{main_~l~0=v_main_~l~0_547, main_~n~0=v_main_~n~0_102} AuxVars[] AssignedVars[] [2021-05-03 00:21:00,354 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:21:00,356 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:00,361 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:00,416 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:21:00,427 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:21:00,472 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:21:00,523 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_549 2) 0) (< (mod v_main_~l~0_549 4294967296) (mod v_main_~n~0_103 4294967296))) InVars {main_~l~0=v_main_~l~0_549, main_~n~0=v_main_~n~0_103} OutVars{main_~l~0=v_main_~l~0_549, main_~n~0=v_main_~n~0_103} AuxVars[] AssignedVars[] [2021-05-03 00:21:00,526 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:21:00,574 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:00,578 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:00,652 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:21:00,665 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:21:00,673 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:21:00,718 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:21:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:21:00,928 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 17 [2021-05-03 00:21:01,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:21:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:21:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:21:01,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:21:16,354 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:21:16,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603581522] [2021-05-03 00:21:16,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1603581522] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:21:16,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:21:16,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2021-05-03 00:21:16,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295645989] [2021-05-03 00:21:16,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-03 00:21:16,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:21:16,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-03 00:21:16,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=6454, Unknown=0, NotChecked=0, Total=6642 [2021-05-03 00:21:16,356 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 80 states have internal predecessors, (83), 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) [2021-05-03 00:21:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:21:35,011 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2021-05-03 00:21:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-03 00:21:35,014 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 80 states have internal predecessors, (83), 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 87 [2021-05-03 00:21:35,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:21:35,015 INFO L225 Difference]: With dead ends: 100 [2021-05-03 00:21:35,015 INFO L226 Difference]: Without dead ends: 92 [2021-05-03 00:21:35,016 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5704 ImplicationChecksByTransitivity, 27797.7ms TimeCoverageRelationStatistics Valid=544, Invalid=24262, Unknown=0, NotChecked=0, Total=24806 [2021-05-03 00:21:35,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-03 00:21:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-03 00:21:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 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) [2021-05-03 00:21:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2021-05-03 00:21:35,025 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 87 [2021-05-03 00:21:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:21:35,025 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2021-05-03 00:21:35,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 80 states have internal predecessors, (83), 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) [2021-05-03 00:21:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2021-05-03 00:21:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-05-03 00:21:35,025 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:21:35,025 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:21:35,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-03 00:21:35,026 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:21:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:21:35,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1630665974, now seen corresponding path program 25 times [2021-05-03 00:21:35,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:21:35,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336144311] [2021-05-03 00:21:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:21:35,048 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_578 1) 4294967296) (mod v_main_~n~0_104 4294967296)) (= 0 (mod v_main_~l~0_578 2))) InVars {main_~l~0=v_main_~l~0_578, main_~n~0=v_main_~n~0_104} OutVars{main_~l~0=v_main_~l~0_578, main_~n~0=v_main_~n~0_104} AuxVars[] AssignedVars[] [2021-05-03 00:21:35,051 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:21:35,091 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:35,094 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:35,362 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-03 00:21:35,369 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:21:35,395 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:21:35,404 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:21:35,466 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_580 2) 0)) (< (mod (+ v_main_~l~0_580 1) 4294967296) (mod v_main_~n~0_105 4294967296))) InVars {main_~l~0=v_main_~l~0_580, main_~n~0=v_main_~n~0_105} OutVars{main_~l~0=v_main_~l~0_580, main_~n~0=v_main_~n~0_105} AuxVars[] AssignedVars[] [2021-05-03 00:21:35,470 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:21:35,473 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:35,478 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:35,548 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:21:35,557 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:21:35,612 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:21:35,660 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:21:35,669 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_582 4294967296) (mod v_main_~n~0_106 4294967296)) (not (= (mod v_main_~l~0_582 2) 0))) InVars {main_~l~0=v_main_~l~0_582, main_~n~0=v_main_~n~0_106} OutVars{main_~l~0=v_main_~l~0_582, main_~n~0=v_main_~n~0_106} AuxVars[] AssignedVars[] [2021-05-03 00:21:35,672 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:21:35,724 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:35,728 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:35,790 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:21:35,800 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:21:35,809 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:21:35,872 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_584 2) 0) (< (mod v_main_~l~0_584 4294967296) (mod v_main_~n~0_107 4294967296))) InVars {main_~l~0=v_main_~l~0_584, main_~n~0=v_main_~n~0_107} OutVars{main_~l~0=v_main_~l~0_584, main_~n~0=v_main_~n~0_107} AuxVars[] AssignedVars[] [2021-05-03 00:21:35,875 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:21:35,878 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:35,883 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:21:35,979 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:21:35,990 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:21:36,044 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:21:36,095 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:21:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:21:36,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:21:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:21:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:21:51,491 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:21:51,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336144311] [2021-05-03 00:21:51,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [336144311] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:21:51,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:21:51,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2021-05-03 00:21:51,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801818313] [2021-05-03 00:21:51,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-03 00:21:51,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:21:51,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-03 00:21:51,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=6781, Unknown=0, NotChecked=0, Total=6972 [2021-05-03 00:21:51,493 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 84 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 82 states have internal predecessors, (86), 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) [2021-05-03 00:21:56,070 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:21:57,031 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:21:57,391 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:21:57,749 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:21:58,114 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:21:58,471 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:21:59,199 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:21:59,568 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:22:03,288 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:22:03,653 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:22:04,037 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:22:04,392 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:22:04,810 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:22:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:22:14,526 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2021-05-03 00:22:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-03 00:22:14,530 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 82 states have internal predecessors, (86), 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 90 [2021-05-03 00:22:14,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:22:14,530 INFO L225 Difference]: With dead ends: 103 [2021-05-03 00:22:14,530 INFO L226 Difference]: Without dead ends: 95 [2021-05-03 00:22:14,531 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6084 ImplicationChecksByTransitivity, 30680.2ms TimeCoverageRelationStatistics Valid=559, Invalid=25847, Unknown=0, NotChecked=0, Total=26406 [2021-05-03 00:22:14,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-03 00:22:14,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-05-03 00:22:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 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) [2021-05-03 00:22:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2021-05-03 00:22:14,538 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 90 [2021-05-03 00:22:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:22:14,538 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2021-05-03 00:22:14,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 82 states have internal predecessors, (86), 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) [2021-05-03 00:22:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2021-05-03 00:22:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-03 00:22:14,539 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:22:14,539 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:22:14,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-05-03 00:22:14,539 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:22:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:22:14,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1837417619, now seen corresponding path program 26 times [2021-05-03 00:22:14,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:22:14,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314881512] [2021-05-03 00:22:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:22:14,560 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_614 1) 4294967296) (mod v_main_~n~0_108 4294967296)) (= (mod v_main_~l~0_614 2) 0)) InVars {main_~l~0=v_main_~l~0_614, main_~n~0=v_main_~n~0_108} OutVars{main_~l~0=v_main_~l~0_614, main_~n~0=v_main_~n~0_108} AuxVars[] AssignedVars[] [2021-05-03 00:22:14,562 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:22:14,600 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:14,603 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:14,675 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:22:14,682 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:22:14,688 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:22:14,727 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_616 1) 4294967296) (mod v_main_~n~0_109 4294967296)) (not (= (mod v_main_~l~0_616 2) 0))) InVars {main_~l~0=v_main_~l~0_616, main_~n~0=v_main_~n~0_109} OutVars{main_~l~0=v_main_~l~0_616, main_~n~0=v_main_~n~0_109} AuxVars[] AssignedVars[] [2021-05-03 00:22:14,730 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:22:14,731 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:14,734 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:14,763 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:22:14,769 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:22:14,797 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:22:14,820 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:22:14,824 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_618 2) 0)) (< (mod v_main_~l~0_618 4294967296) (mod v_main_~n~0_110 4294967296))) InVars {main_~l~0=v_main_~l~0_618, main_~n~0=v_main_~n~0_110} OutVars{main_~l~0=v_main_~l~0_618, main_~n~0=v_main_~n~0_110} AuxVars[] AssignedVars[] [2021-05-03 00:22:14,827 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:22:14,828 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:14,831 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:14,855 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:22:14,861 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:22:14,883 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:22:14,915 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_620 2) 0) (< (mod v_main_~l~0_620 4294967296) (mod v_main_~n~0_111 4294967296))) InVars {main_~l~0=v_main_~l~0_620, main_~n~0=v_main_~n~0_111} OutVars{main_~l~0=v_main_~l~0_620, main_~n~0=v_main_~n~0_111} AuxVars[] AssignedVars[] [2021-05-03 00:22:14,919 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:22:14,942 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:14,947 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:15,002 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:22:15,007 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:22:15,010 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:22:15,035 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:22:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:22:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:22:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:22:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:22:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:22:29,347 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:22:29,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314881512] [2021-05-03 00:22:29,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [314881512] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:22:29,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:22:29,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2021-05-03 00:22:29,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931277672] [2021-05-03 00:22:29,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-03 00:22:29,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:22:29,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-03 00:22:29,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=7454, Unknown=0, NotChecked=0, Total=7656 [2021-05-03 00:22:29,349 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 86 states have internal predecessors, (89), 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) [2021-05-03 00:22:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:22:50,685 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2021-05-03 00:22:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-03 00:22:50,689 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 86 states have internal predecessors, (89), 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 93 [2021-05-03 00:22:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:22:50,689 INFO L225 Difference]: With dead ends: 106 [2021-05-03 00:22:50,689 INFO L226 Difference]: Without dead ends: 98 [2021-05-03 00:22:50,690 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6646 ImplicationChecksByTransitivity, 28298.1ms TimeCoverageRelationStatistics Valid=586, Invalid=28144, Unknown=0, NotChecked=0, Total=28730 [2021-05-03 00:22:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-03 00:22:50,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-03 00:22:50,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 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) [2021-05-03 00:22:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-05-03 00:22:50,697 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 93 [2021-05-03 00:22:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:22:50,697 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-05-03 00:22:50,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 86 states have internal predecessors, (89), 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) [2021-05-03 00:22:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-05-03 00:22:50,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-05-03 00:22:50,698 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:22:50,698 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:22:50,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-05-03 00:22:50,698 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:22:50,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:22:50,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1557471468, now seen corresponding path program 27 times [2021-05-03 00:22:50,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:22:50,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364221927] [2021-05-03 00:22:50,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:22:50,743 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_651 2) 0) (< (mod (+ v_main_~l~0_651 1) 4294967296) (mod v_main_~n~0_112 4294967296))) InVars {main_~l~0=v_main_~l~0_651, main_~n~0=v_main_~n~0_112} OutVars{main_~l~0=v_main_~l~0_651, main_~n~0=v_main_~n~0_112} AuxVars[] AssignedVars[] [2021-05-03 00:22:50,746 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:22:50,785 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:50,788 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:51,186 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:22:51,226 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:22:51,235 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:22:51,242 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:22:51,294 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_653 1) 4294967296) (mod v_main_~n~0_113 4294967296)) (not (= (mod v_main_~l~0_653 2) 0))) InVars {main_~l~0=v_main_~l~0_653, main_~n~0=v_main_~n~0_113} OutVars{main_~l~0=v_main_~l~0_653, main_~n~0=v_main_~n~0_113} AuxVars[] AssignedVars[] [2021-05-03 00:22:51,297 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:22:51,299 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:51,303 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:51,329 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:22:51,336 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:22:51,379 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:22:51,414 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:22:51,419 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_655 4294967296) (mod v_main_~n~0_114 4294967296)) (not (= (mod v_main_~l~0_655 2) 0))) InVars {main_~l~0=v_main_~l~0_655, main_~n~0=v_main_~n~0_114} OutVars{main_~l~0=v_main_~l~0_655, main_~n~0=v_main_~n~0_114} AuxVars[] AssignedVars[] [2021-05-03 00:22:51,422 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:22:51,424 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:51,427 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:51,469 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:22:51,476 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:22:51,518 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:22:51,565 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= 0 (mod v_main_~l~0_657 2)) (< (mod v_main_~l~0_657 4294967296) (mod v_main_~n~0_115 4294967296))) InVars {main_~l~0=v_main_~l~0_657, main_~n~0=v_main_~n~0_115} OutVars{main_~l~0=v_main_~l~0_657, main_~n~0=v_main_~n~0_115} AuxVars[] AssignedVars[] [2021-05-03 00:22:51,567 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:22:51,569 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:51,573 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:22:51,636 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:22:51,643 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:22:51,685 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:22:51,720 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:22:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:22:51,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:22:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:22:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:23:09,546 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:23:09,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364221927] [2021-05-03 00:23:09,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1364221927] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:23:09,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:23:09,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2021-05-03 00:23:09,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207603152] [2021-05-03 00:23:09,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-03 00:23:09,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:23:09,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-03 00:23:09,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=7805, Unknown=0, NotChecked=0, Total=8010 [2021-05-03 00:23:09,548 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 90 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 88 states have internal predecessors, (92), 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) [2021-05-03 00:23:17,836 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:23:20,488 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:23:23,416 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:23:29,716 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:23:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:23:35,810 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2021-05-03 00:23:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-03 00:23:35,814 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 88 states have internal predecessors, (92), 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 96 [2021-05-03 00:23:35,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:23:35,841 INFO L225 Difference]: With dead ends: 109 [2021-05-03 00:23:35,841 INFO L226 Difference]: Without dead ends: 101 [2021-05-03 00:23:35,844 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7056 ImplicationChecksByTransitivity, 34947.8ms TimeCoverageRelationStatistics Valid=601, Invalid=29849, Unknown=0, NotChecked=0, Total=30450 [2021-05-03 00:23:35,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-03 00:23:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-03 00:23:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 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) [2021-05-03 00:23:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2021-05-03 00:23:35,852 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 96 [2021-05-03 00:23:35,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:23:35,852 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2021-05-03 00:23:35,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 88 states have internal predecessors, (92), 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) [2021-05-03 00:23:35,852 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2021-05-03 00:23:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-03 00:23:35,852 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:23:35,853 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:23:35,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-05-03 00:23:35,853 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:23:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:23:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash 733168497, now seen corresponding path program 28 times [2021-05-03 00:23:35,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:23:35,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700126425] [2021-05-03 00:23:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:23:35,889 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_689 2) 0) (< (mod (+ v_main_~l~0_689 1) 4294967296) (mod v_main_~n~0_116 4294967296))) InVars {main_~l~0=v_main_~l~0_689, main_~n~0=v_main_~n~0_116} OutVars{main_~l~0=v_main_~l~0_689, main_~n~0=v_main_~n~0_116} AuxVars[] AssignedVars[] [2021-05-03 00:23:35,891 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:23:35,940 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:23:35,945 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:23:36,052 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:23:36,075 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:23:36,084 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:23:36,141 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_691 1) 4294967296) (mod v_main_~n~0_117 4294967296)) (not (= (mod v_main_~l~0_691 2) 0))) InVars {main_~l~0=v_main_~l~0_691, main_~n~0=v_main_~n~0_117} OutVars{main_~l~0=v_main_~l~0_691, main_~n~0=v_main_~n~0_117} AuxVars[] AssignedVars[] [2021-05-03 00:23:36,144 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:23:36,146 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:23:36,150 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:23:36,215 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:23:36,226 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:23:36,277 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:23:36,330 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:23:36,337 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_693 4294967296) (mod v_main_~n~0_118 4294967296)) (not (= (mod v_main_~l~0_693 2) 0))) InVars {main_~l~0=v_main_~l~0_693, main_~n~0=v_main_~n~0_118} OutVars{main_~l~0=v_main_~l~0_693, main_~n~0=v_main_~n~0_118} AuxVars[] AssignedVars[] [2021-05-03 00:23:36,340 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:23:36,342 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:23:36,346 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:23:36,438 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:23:36,445 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:23:36,470 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:23:36,497 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_695 4294967296) (mod v_main_~n~0_119 4294967296)) (= (mod v_main_~l~0_695 2) 0)) InVars {main_~l~0=v_main_~l~0_695, main_~n~0=v_main_~n~0_119} OutVars{main_~l~0=v_main_~l~0_695, main_~n~0=v_main_~n~0_119} AuxVars[] AssignedVars[] [2021-05-03 00:23:36,499 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:23:36,533 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:23:36,535 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:23:36,672 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:23:36,676 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:23:36,680 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:23:36,703 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:23:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:23:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:23:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:23:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:23:57,328 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:23:57,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700126425] [2021-05-03 00:23:57,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [700126425] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:23:57,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:23:57,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2021-05-03 00:23:57,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308464198] [2021-05-03 00:23:57,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-03 00:23:57,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:23:57,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-03 00:23:57,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=8344, Unknown=0, NotChecked=0, Total=8556 [2021-05-03 00:23:57,330 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 93 states, 93 states have (on average 1.021505376344086) internal successors, (95), 91 states have internal predecessors, (95), 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) [2021-05-03 00:24:05,546 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:24:12,305 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:24:19,062 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:24:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:24:21,138 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2021-05-03 00:24:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-03 00:24:21,143 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.021505376344086) internal successors, (95), 91 states have internal predecessors, (95), 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 99 [2021-05-03 00:24:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:24:21,144 INFO L225 Difference]: With dead ends: 112 [2021-05-03 00:24:21,144 INFO L226 Difference]: Without dead ends: 104 [2021-05-03 00:24:21,145 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7569 ImplicationChecksByTransitivity, 36173.4ms TimeCoverageRelationStatistics Valid=622, Invalid=31958, Unknown=0, NotChecked=0, Total=32580 [2021-05-03 00:24:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-03 00:24:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-03 00:24:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 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) [2021-05-03 00:24:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2021-05-03 00:24:21,153 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 99 [2021-05-03 00:24:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:24:21,153 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2021-05-03 00:24:21,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 1.021505376344086) internal successors, (95), 91 states have internal predecessors, (95), 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) [2021-05-03 00:24:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2021-05-03 00:24:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-05-03 00:24:21,154 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:24:21,154 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:24:21,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-05-03 00:24:21,154 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:24:21,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:24:21,154 INFO L82 PathProgramCache]: Analyzing trace with hash 26398030, now seen corresponding path program 29 times [2021-05-03 00:24:21,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:24:21,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888750393] [2021-05-03 00:24:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:24:21,179 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_728 1) 4294967296) (mod v_main_~n~0_120 4294967296)) (= (mod v_main_~l~0_728 2) 0)) InVars {main_~l~0=v_main_~l~0_728, main_~n~0=v_main_~n~0_120} OutVars{main_~l~0=v_main_~l~0_728, main_~n~0=v_main_~n~0_120} AuxVars[] AssignedVars[] [2021-05-03 00:24:21,182 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:24:21,236 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:24:21,241 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:24:21,346 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:24:21,418 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:24:21,429 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:24:21,439 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:24:21,498 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_730 1) 4294967296) (mod v_main_~n~0_121 4294967296)) (not (= (mod v_main_~l~0_730 2) 0))) InVars {main_~l~0=v_main_~l~0_730, main_~n~0=v_main_~n~0_121} OutVars{main_~l~0=v_main_~l~0_730, main_~n~0=v_main_~n~0_121} AuxVars[] AssignedVars[] [2021-05-03 00:24:21,501 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:24:21,503 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:24:21,508 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:24:21,539 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:24:21,551 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:24:21,605 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:24:21,660 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:24:21,668 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_732 4294967296) (mod v_main_~n~0_122 4294967296)) (not (= (mod v_main_~l~0_732 2) 0))) InVars {main_~l~0=v_main_~l~0_732, main_~n~0=v_main_~n~0_122} OutVars{main_~l~0=v_main_~l~0_732, main_~n~0=v_main_~n~0_122} AuxVars[] AssignedVars[] [2021-05-03 00:24:21,672 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:24:21,709 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:24:21,712 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:24:21,745 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:24:21,752 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:24:21,757 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:24:21,796 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_734 4294967296) (mod v_main_~n~0_123 4294967296)) (= (mod v_main_~l~0_734 2) 0)) InVars {main_~l~0=v_main_~l~0_734, main_~n~0=v_main_~n~0_123} OutVars{main_~l~0=v_main_~l~0_734, main_~n~0=v_main_~n~0_123} AuxVars[] AssignedVars[] [2021-05-03 00:24:21,798 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:24:21,800 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:24:21,802 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:24:21,971 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:24:21,977 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:24:22,008 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:24:22,037 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:24:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:24:22,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:24:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:24:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:24:38,882 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:24:38,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888750393] [2021-05-03 00:24:38,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [888750393] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:24:38,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:24:38,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2021-05-03 00:24:38,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919473479] [2021-05-03 00:24:38,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-03 00:24:38,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:24:38,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-03 00:24:38,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=8901, Unknown=0, NotChecked=0, Total=9120 [2021-05-03 00:24:38,884 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 96 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 94 states have internal predecessors, (98), 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) [2021-05-03 00:24:42,416 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:24:45,885 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:24:46,323 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:24:46,799 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:04,000 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:25:06,901 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2021-05-03 00:25:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-03 00:25:06,905 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 94 states have internal predecessors, (98), 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 102 [2021-05-03 00:25:06,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:25:06,906 INFO L225 Difference]: With dead ends: 115 [2021-05-03 00:25:06,906 INFO L226 Difference]: Without dead ends: 107 [2021-05-03 00:25:06,908 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8100 ImplicationChecksByTransitivity, 35321.7ms TimeCoverageRelationStatistics Valid=643, Invalid=34139, Unknown=0, NotChecked=0, Total=34782 [2021-05-03 00:25:06,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-03 00:25:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-05-03 00:25:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 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) [2021-05-03 00:25:06,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2021-05-03 00:25:06,917 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 102 [2021-05-03 00:25:06,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:25:06,917 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2021-05-03 00:25:06,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 94 states have internal predecessors, (98), 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) [2021-05-03 00:25:06,917 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2021-05-03 00:25:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-03 00:25:06,917 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:25:06,917 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:25:06,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-05-03 00:25:06,918 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:25:06,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:25:06,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1077060559, now seen corresponding path program 30 times [2021-05-03 00:25:06,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:25:06,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878412928] [2021-05-03 00:25:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:25:06,944 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_768 1) 4294967296) (mod v_main_~n~0_124 4294967296)) (= 0 (mod v_main_~l~0_768 2))) InVars {main_~l~0=v_main_~l~0_768, main_~n~0=v_main_~n~0_124} OutVars{main_~l~0=v_main_~l~0_768, main_~n~0=v_main_~n~0_124} AuxVars[] AssignedVars[] [2021-05-03 00:25:06,947 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:25:06,994 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:25:06,998 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:25:07,193 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:25:07,198 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:25:07,206 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:25:07,215 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:25:07,286 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_770 1) 4294967296) (mod v_main_~n~0_125 4294967296)) (not (= (mod v_main_~l~0_770 2) 0))) InVars {main_~l~0=v_main_~l~0_770, main_~n~0=v_main_~n~0_125} OutVars{main_~l~0=v_main_~l~0_770, main_~n~0=v_main_~n~0_125} AuxVars[] AssignedVars[] [2021-05-03 00:25:07,290 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:25:07,292 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:25:07,297 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:25:07,352 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:25:07,365 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:25:07,431 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:25:07,491 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:25:07,501 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_772 4294967296) (mod v_main_~n~0_126 4294967296)) (not (= (mod v_main_~l~0_772 2) 0))) InVars {main_~l~0=v_main_~l~0_772, main_~n~0=v_main_~n~0_126} OutVars{main_~l~0=v_main_~l~0_772, main_~n~0=v_main_~n~0_126} AuxVars[] AssignedVars[] [2021-05-03 00:25:07,505 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:25:07,566 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:25:07,572 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:25:07,670 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:25:07,686 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:25:07,698 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:25:07,762 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_774 2) 0) (< (mod v_main_~l~0_774 4294967296) (mod v_main_~n~0_127 4294967296))) InVars {main_~l~0=v_main_~l~0_774, main_~n~0=v_main_~n~0_127} OutVars{main_~l~0=v_main_~l~0_774, main_~n~0=v_main_~n~0_127} AuxVars[] AssignedVars[] [2021-05-03 00:25:07,765 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:25:07,804 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:25:07,806 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:25:07,876 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:25:07,882 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:25:07,888 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:25:07,921 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:25:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:25:08,120 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 17 [2021-05-03 00:25:08,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:25:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:25:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:25:08,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:25:30,022 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:25:30,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878412928] [2021-05-03 00:25:30,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1878412928] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:25:30,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:25:30,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2021-05-03 00:25:30,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828817538] [2021-05-03 00:25:30,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-03 00:25:30,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:25:30,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-03 00:25:30,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=9670, Unknown=0, NotChecked=0, Total=9900 [2021-05-03 00:25:30,024 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 98 states have internal predecessors, (101), 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) [2021-05-03 00:25:34,160 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:25:37,358 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:37,798 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:38,230 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:38,679 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:25:39,128 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:39,566 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:43,397 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:46,123 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:46,668 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:47,532 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:25:47,936 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:50,212 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:53,125 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:55,125 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:55,559 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:55,984 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:25:56,428 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:56,876 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:57,296 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:57,762 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:25:58,316 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:58,895 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:25:59,346 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:25:59,793 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:26:00,246 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:26:00,664 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:26:01,061 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:26:01,875 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:26:04,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:26:04,685 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2021-05-03 00:26:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-03 00:26:04,688 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 98 states have internal predecessors, (101), 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 105 [2021-05-03 00:26:04,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:26:04,689 INFO L225 Difference]: With dead ends: 118 [2021-05-03 00:26:04,689 INFO L226 Difference]: Without dead ends: 110 [2021-05-03 00:26:04,690 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8747 ImplicationChecksByTransitivity, 44760.5ms TimeCoverageRelationStatistics Valid=670, Invalid=36772, Unknown=0, NotChecked=0, Total=37442 [2021-05-03 00:26:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-03 00:26:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-03 00:26:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 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) [2021-05-03 00:26:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2021-05-03 00:26:04,698 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 105 [2021-05-03 00:26:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:26:04,698 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2021-05-03 00:26:04,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 98 states have internal predecessors, (101), 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) [2021-05-03 00:26:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2021-05-03 00:26:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-05-03 00:26:04,698 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:26:04,698 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:26:04,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-05-03 00:26:04,698 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:26:04,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:26:04,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1417816112, now seen corresponding path program 31 times [2021-05-03 00:26:04,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:26:04,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265190947] [2021-05-03 00:26:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:26:04,731 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_809 1) 4294967296) (mod v_main_~n~0_128 4294967296)) (= (mod v_main_~l~0_809 2) 0)) InVars {main_~l~0=v_main_~l~0_809, main_~n~0=v_main_~n~0_128} OutVars{main_~l~0=v_main_~l~0_809, main_~n~0=v_main_~n~0_128} AuxVars[] AssignedVars[] [2021-05-03 00:26:04,733 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:26:04,735 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:04,738 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:04,806 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:26:04,813 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:26:04,851 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:26:04,890 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_811 2) 0)) (< (mod (+ v_main_~l~0_811 1) 4294967296) (mod v_main_~n~0_129 4294967296))) InVars {main_~l~0=v_main_~l~0_811, main_~n~0=v_main_~n~0_129} OutVars{main_~l~0=v_main_~l~0_811, main_~n~0=v_main_~n~0_129} AuxVars[] AssignedVars[] [2021-05-03 00:26:04,892 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:26:04,933 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:04,936 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:04,995 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:26:05,001 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:26:05,007 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:26:05,056 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:26:05,062 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_813 4294967296) (mod v_main_~n~0_130 4294967296)) (not (= (mod v_main_~l~0_813 2) 0))) InVars {main_~l~0=v_main_~l~0_813, main_~n~0=v_main_~n~0_130} OutVars{main_~l~0=v_main_~l~0_813, main_~n~0=v_main_~n~0_130} AuxVars[] AssignedVars[] [2021-05-03 00:26:05,065 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:26:05,066 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:05,071 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:05,110 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:26:05,119 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:26:05,157 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:26:05,204 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_815 2) 0) (< (mod v_main_~l~0_815 4294967296) (mod v_main_~n~0_131 4294967296))) InVars {main_~l~0=v_main_~l~0_815, main_~n~0=v_main_~n~0_131} OutVars{main_~l~0=v_main_~l~0_815, main_~n~0=v_main_~n~0_131} AuxVars[] AssignedVars[] [2021-05-03 00:26:05,206 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:26:05,217 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:05,220 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:05,291 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:26:05,298 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:26:05,335 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:26:05,371 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:26:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:26:05,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:26:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:26:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:26:25,641 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:26:25,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265190947] [2021-05-03 00:26:25,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1265190947] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:26:25,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:26:25,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2021-05-03 00:26:25,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835404852] [2021-05-03 00:26:25,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-03 00:26:25,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:26:25,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-03 00:26:25,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=10069, Unknown=0, NotChecked=0, Total=10302 [2021-05-03 00:26:25,643 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 102 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 100 states have internal predecessors, (104), 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) [2021-05-03 00:26:28,578 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:26:28,966 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:26:31,098 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:26:32,206 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:26:32,596 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:26:32,976 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:26:33,417 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:26:34,248 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:26:48,007 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:26:56,777 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:26:57,918 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:26:59,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:26:59,968 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2021-05-03 00:26:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-03 00:26:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 100 states have internal predecessors, (104), 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 108 [2021-05-03 00:26:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:26:59,974 INFO L225 Difference]: With dead ends: 121 [2021-05-03 00:26:59,974 INFO L226 Difference]: Without dead ends: 113 [2021-05-03 00:26:59,976 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9216 ImplicationChecksByTransitivity, 42537.2ms TimeCoverageRelationStatistics Valid=685, Invalid=38717, Unknown=0, NotChecked=0, Total=39402 [2021-05-03 00:26:59,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-03 00:26:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-05-03 00:26:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 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) [2021-05-03 00:27:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2021-05-03 00:27:00,000 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 108 [2021-05-03 00:27:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:27:00,000 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2021-05-03 00:27:00,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 100 states have internal predecessors, (104), 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) [2021-05-03 00:27:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2021-05-03 00:27:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-03 00:27:00,001 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:27:00,001 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:27:00,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-05-03 00:27:00,001 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:27:00,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:27:00,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2083767725, now seen corresponding path program 32 times [2021-05-03 00:27:00,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:27:00,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191700519] [2021-05-03 00:27:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:27:00,035 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_851 1) 4294967296) (mod v_main_~n~0_132 4294967296)) (= (mod v_main_~l~0_851 2) 0)) InVars {main_~l~0=v_main_~l~0_851, main_~n~0=v_main_~n~0_132} OutVars{main_~l~0=v_main_~l~0_851, main_~n~0=v_main_~n~0_132} AuxVars[] AssignedVars[] [2021-05-03 00:27:00,039 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:27:00,041 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:27:00,045 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:27:00,140 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:27:00,148 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:27:00,200 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:27:00,265 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_853 2) 0)) (< (mod (+ v_main_~l~0_853 1) 4294967296) (mod v_main_~n~0_133 4294967296))) InVars {main_~l~0=v_main_~l~0_853, main_~n~0=v_main_~n~0_133} OutVars{main_~l~0=v_main_~l~0_853, main_~n~0=v_main_~n~0_133} AuxVars[] AssignedVars[] [2021-05-03 00:27:00,267 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:27:00,319 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:27:00,324 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:27:00,362 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:27:00,369 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:27:00,375 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:27:00,421 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:27:00,427 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_855 2) 0)) (< (mod v_main_~l~0_855 4294967296) (mod v_main_~n~0_134 4294967296))) InVars {main_~l~0=v_main_~l~0_855, main_~n~0=v_main_~n~0_134} OutVars{main_~l~0=v_main_~l~0_855, main_~n~0=v_main_~n~0_134} AuxVars[] AssignedVars[] [2021-05-03 00:27:00,429 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:27:00,431 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:27:00,435 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:27:00,483 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:27:00,494 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:27:00,545 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:27:00,599 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_857 4294967296) (mod v_main_~n~0_135 4294967296)) (= (mod v_main_~l~0_857 2) 0)) InVars {main_~l~0=v_main_~l~0_857, main_~n~0=v_main_~n~0_135} OutVars{main_~l~0=v_main_~l~0_857, main_~n~0=v_main_~n~0_135} AuxVars[] AssignedVars[] [2021-05-03 00:27:00,601 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:27:00,653 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:27:00,657 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:27:00,742 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:27:00,751 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:27:00,760 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:27:00,805 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:27:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:27:00,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:27:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:27:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:27:25,997 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:27:25,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191700519] [2021-05-03 00:27:25,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [191700519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:27:25,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:27:25,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2021-05-03 00:27:25,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587098677] [2021-05-03 00:27:25,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-03 00:27:25,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:27:25,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-03 00:27:25,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=10680, Unknown=0, NotChecked=0, Total=10920 [2021-05-03 00:27:25,999 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 105 states, 105 states have (on average 1.019047619047619) internal successors, (107), 103 states have internal predecessors, (107), 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) [2021-05-03 00:27:32,971 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:27:33,395 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:27:35,713 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:27:37,323 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:27:38,932 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:27:39,390 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:27:41,185 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:27:44,115 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:27:44,541 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:27:45,422 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:27:45,839 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:27:46,248 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:27:47,877 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:27:48,303 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:27:48,785 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:27:49,400 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:27:49,904 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:27:50,518 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:27:51,086 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:27:52,410 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:27:52,897 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:27:54,826 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:27:55,226 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:27:58,004 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:27:58,395 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:27:59,937 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:00,852 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:28:05,863 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2021-05-03 00:28:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-03 00:28:05,868 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.019047619047619) internal successors, (107), 103 states have internal predecessors, (107), 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 111 [2021-05-03 00:28:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:28:05,869 INFO L225 Difference]: With dead ends: 124 [2021-05-03 00:28:05,869 INFO L226 Difference]: Without dead ends: 116 [2021-05-03 00:28:05,870 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9801 ImplicationChecksByTransitivity, 50894.4ms TimeCoverageRelationStatistics Valid=706, Invalid=41114, Unknown=0, NotChecked=0, Total=41820 [2021-05-03 00:28:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-03 00:28:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-05-03 00:28:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 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) [2021-05-03 00:28:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2021-05-03 00:28:05,878 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 111 [2021-05-03 00:28:05,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:28:05,878 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2021-05-03 00:28:05,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 1.019047619047619) internal successors, (107), 103 states have internal predecessors, (107), 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) [2021-05-03 00:28:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2021-05-03 00:28:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-05-03 00:28:05,879 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:28:05,879 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:28:05,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-05-03 00:28:05,879 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:28:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:28:05,880 INFO L82 PathProgramCache]: Analyzing trace with hash 474370450, now seen corresponding path program 33 times [2021-05-03 00:28:05,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:28:05,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609038688] [2021-05-03 00:28:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:28:05,906 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_894 1) 4294967296) (mod v_main_~n~0_136 4294967296)) (= (mod v_main_~l~0_894 2) 0)) InVars {main_~l~0=v_main_~l~0_894, main_~n~0=v_main_~n~0_136} OutVars{main_~l~0=v_main_~l~0_894, main_~n~0=v_main_~n~0_136} AuxVars[] AssignedVars[] [2021-05-03 00:28:05,909 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:28:05,965 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:28:05,969 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:28:06,080 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:28:06,091 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:28:06,101 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:28:06,168 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_896 1) 4294967296) (mod v_main_~n~0_137 4294967296)) (not (= (mod v_main_~l~0_896 2) 0))) InVars {main_~l~0=v_main_~l~0_896, main_~n~0=v_main_~n~0_137} OutVars{main_~l~0=v_main_~l~0_896, main_~n~0=v_main_~n~0_137} AuxVars[] AssignedVars[] [2021-05-03 00:28:06,172 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:28:06,229 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:28:06,235 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:28:06,308 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:28:06,318 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:28:06,328 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:28:06,383 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:28:06,390 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_898 2) 0)) (< (mod v_main_~l~0_898 4294967296) (mod v_main_~n~0_138 4294967296))) InVars {main_~l~0=v_main_~l~0_898, main_~n~0=v_main_~n~0_138} OutVars{main_~l~0=v_main_~l~0_898, main_~n~0=v_main_~n~0_138} AuxVars[] AssignedVars[] [2021-05-03 00:28:06,393 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:28:06,396 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:28:06,400 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:28:06,443 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:28:06,455 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:28:06,514 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:28:06,574 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_900 2) 0) (< (mod v_main_~l~0_900 4294967296) (mod v_main_~n~0_139 4294967296))) InVars {main_~l~0=v_main_~l~0_900, main_~n~0=v_main_~n~0_139} OutVars{main_~l~0=v_main_~l~0_900, main_~n~0=v_main_~n~0_139} AuxVars[] AssignedVars[] [2021-05-03 00:28:06,577 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:28:06,579 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:28:06,584 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:28:06,677 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:28:06,689 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:28:06,745 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:28:06,796 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:28:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:28:06,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:28:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:28:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:28:08,901 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-05-03 00:28:36,144 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:28:36,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609038688] [2021-05-03 00:28:36,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [609038688] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:28:36,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:28:36,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2021-05-03 00:28:36,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253337198] [2021-05-03 00:28:36,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-03 00:28:36,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:28:36,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-03 00:28:36,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=11309, Unknown=0, NotChecked=0, Total=11556 [2021-05-03 00:28:36,146 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 108 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 106 states have internal predecessors, (110), 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) [2021-05-03 00:28:37,186 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 00:28:37,611 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-03 00:28:38,059 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:38,482 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:28:38,904 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:39,365 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-03 00:28:39,868 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:28:40,802 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:43,075 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:43,590 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:28:44,096 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:44,615 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:45,223 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:45,720 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:46,232 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:47,195 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:48,752 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:49,570 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:49,987 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:51,231 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:52,193 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:53,042 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:53,448 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:54,657 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:55,135 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:55,596 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:28:56,133 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:56,647 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:57,151 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:28:57,639 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:28:58,075 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:58,590 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:59,169 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:28:59,705 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:00,242 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:00,741 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:02,340 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:02,894 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:03,390 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:03,920 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:04,452 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:29:04,903 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:05,370 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:05,875 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:29:06,390 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:06,838 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:07,337 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:29:07,839 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:08,346 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:09,024 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:29:09,687 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:10,937 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:11,360 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:12,196 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:12,624 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:13,060 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:13,458 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:13,872 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:14,745 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:15,220 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:15,644 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:29:16,059 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:16,554 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:17,071 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:17,583 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:18,008 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:18,840 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:19,256 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:20,115 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:20,533 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:21,795 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:22,248 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:29:23,056 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:29:23,517 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:29:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:29:24,694 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2021-05-03 00:29:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-03 00:29:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 106 states have internal predecessors, (110), 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 114 [2021-05-03 00:29:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:29:24,701 INFO L225 Difference]: With dead ends: 127 [2021-05-03 00:29:24,701 INFO L226 Difference]: Without dead ends: 119 [2021-05-03 00:29:24,703 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 60479.6ms TimeCoverageRelationStatistics Valid=727, Invalid=43583, Unknown=0, NotChecked=0, Total=44310 [2021-05-03 00:29:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-03 00:29:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-03 00:29:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 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) [2021-05-03 00:29:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2021-05-03 00:29:24,711 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 114 [2021-05-03 00:29:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:29:24,711 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2021-05-03 00:29:24,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 106 states have internal predecessors, (110), 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) [2021-05-03 00:29:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2021-05-03 00:29:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-03 00:29:24,711 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:29:24,712 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:29:24,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-05-03 00:29:24,712 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:29:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:29:24,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2134931189, now seen corresponding path program 34 times [2021-05-03 00:29:24,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:29:24,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030999376] [2021-05-03 00:29:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:29:24,738 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_938 2) 0) (< (mod (+ v_main_~l~0_938 1) 4294967296) (mod v_main_~n~0_140 4294967296))) InVars {main_~l~0=v_main_~l~0_938, main_~n~0=v_main_~n~0_140} OutVars{main_~l~0=v_main_~l~0_938, main_~n~0=v_main_~n~0_140} AuxVars[] AssignedVars[] [2021-05-03 00:29:24,741 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:29:24,744 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:24,749 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:24,857 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:29:24,876 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:29:24,960 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:29:25,046 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_940 1) 4294967296) (mod v_main_~n~0_141 4294967296)) (not (= (mod v_main_~l~0_940 2) 0))) InVars {main_~l~0=v_main_~l~0_940, main_~n~0=v_main_~n~0_141} OutVars{main_~l~0=v_main_~l~0_940, main_~n~0=v_main_~n~0_141} AuxVars[] AssignedVars[] [2021-05-03 00:29:25,049 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:29:25,051 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:25,056 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:25,110 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:29:25,122 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:29:25,185 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:29:25,239 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:29:25,246 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_942 4294967296) (mod v_main_~n~0_142 4294967296)) (not (= (mod v_main_~l~0_942 2) 0))) InVars {main_~l~0=v_main_~l~0_942, main_~n~0=v_main_~n~0_142} OutVars{main_~l~0=v_main_~l~0_942, main_~n~0=v_main_~n~0_142} AuxVars[] AssignedVars[] [2021-05-03 00:29:25,249 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:29:25,306 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:25,310 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:25,360 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:29:25,371 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:29:25,380 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:29:25,439 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_944 4294967296) (mod v_main_~n~0_143 4294967296)) (= (mod v_main_~l~0_944 2) 0)) InVars {main_~l~0=v_main_~l~0_944, main_~n~0=v_main_~n~0_143} OutVars{main_~l~0=v_main_~l~0_944, main_~n~0=v_main_~n~0_143} AuxVars[] AssignedVars[] [2021-05-03 00:29:25,443 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:29:25,445 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:25,456 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:25,559 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:29:25,653 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:29:25,664 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:29:25,715 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:29:25,765 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:29:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:29:26,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:29:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:29:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:29:58,242 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:29:58,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030999376] [2021-05-03 00:29:58,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1030999376] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:29:58,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:29:58,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2021-05-03 00:29:58,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212442907] [2021-05-03 00:29:58,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-03 00:29:58,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:29:58,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-03 00:29:58,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=11956, Unknown=0, NotChecked=0, Total=12210 [2021-05-03 00:29:58,244 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 111 states, 111 states have (on average 1.018018018018018) internal successors, (113), 109 states have internal predecessors, (113), 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) [2021-05-03 00:30:01,684 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:02,101 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:02,958 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:03,375 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:04,254 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:04,697 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:05,106 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:30:05,528 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:06,829 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:07,243 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:07,675 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:30:08,483 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:08,914 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:30:09,731 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:10,958 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:13,293 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:13,801 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:30:14,977 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:30:15,897 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:17,148 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:17,647 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:18,126 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:18,536 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:20,182 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:20,600 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:22,314 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:24,016 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:24,429 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:24,881 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:26,245 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:27,174 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:28,508 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:30,016 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:32,407 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:33,297 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:34,585 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:35,075 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:35,577 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:30:36,079 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:36,906 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:30:38,500 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:39,778 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:41,377 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:42,290 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:30:42,729 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:30:44,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:44,381 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2021-05-03 00:30:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-05-03 00:30:44,387 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.018018018018018) internal successors, (113), 109 states have internal predecessors, (113), 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 117 [2021-05-03 00:30:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:44,388 INFO L225 Difference]: With dead ends: 130 [2021-05-03 00:30:44,388 INFO L226 Difference]: Without dead ends: 122 [2021-05-03 00:30:44,389 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 61979.0ms TimeCoverageRelationStatistics Valid=748, Invalid=46124, Unknown=0, NotChecked=0, Total=46872 [2021-05-03 00:30:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-03 00:30:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-03 00:30:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 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) [2021-05-03 00:30:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2021-05-03 00:30:44,399 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 117 [2021-05-03 00:30:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:44,400 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2021-05-03 00:30:44,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 1.018018018018018) internal successors, (113), 109 states have internal predecessors, (113), 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) [2021-05-03 00:30:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2021-05-03 00:30:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-05-03 00:30:44,400 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:44,400 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:44,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-05-03 00:30:44,400 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:44,401 INFO L82 PathProgramCache]: Analyzing trace with hash 548039028, now seen corresponding path program 35 times [2021-05-03 00:30:44,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:44,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483956808] [2021-05-03 00:30:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:44,429 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~l~0_983 1) 4294967296) (mod v_main_~n~0_144 4294967296)) (= (mod v_main_~l~0_983 2) 0)) InVars {main_~l~0=v_main_~l~0_983, main_~n~0=v_main_~n~0_144} OutVars{main_~l~0=v_main_~l~0_983, main_~n~0=v_main_~n~0_144} AuxVars[] AssignedVars[] [2021-05-03 00:30:44,432 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:30:44,435 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:44,439 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:44,558 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:30:44,570 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:30:44,628 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:30:44,693 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~l~0_985 2) 0)) (< (mod (+ v_main_~l~0_985 1) 4294967296) (mod v_main_~n~0_145 4294967296))) InVars {main_~l~0=v_main_~l~0_985, main_~n~0=v_main_~n~0_145} OutVars{main_~l~0=v_main_~l~0_985, main_~n~0=v_main_~n~0_145} AuxVars[] AssignedVars[] [2021-05-03 00:30:44,696 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size [2021-05-03 00:30:44,759 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:44,763 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:44,815 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-03 00:30:44,825 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:44,834 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.6 percent of original size 103 [2021-05-03 00:30:44,891 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:30:44,899 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~l~0_987 4294967296) (mod v_main_~n~0_146 4294967296)) (not (= (mod v_main_~l~0_987 2) 0))) InVars {main_~l~0=v_main_~l~0_987, main_~n~0=v_main_~n~0_146} OutVars{main_~l~0=v_main_~l~0_987, main_~n~0=v_main_~n~0_146} AuxVars[] AssignedVars[] [2021-05-03 00:30:44,902 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:30:44,958 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:44,962 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,090 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 1 [2021-05-03 00:30:45,097 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-03 00:30:45,111 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-03 00:30:45,120 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:30:45,185 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= (mod v_main_~l~0_989 2) 0) (< (mod v_main_~l~0_989 4294967296) (mod v_main_~n~0_147 4294967296))) InVars {main_~l~0=v_main_~l~0_989, main_~n~0=v_main_~n~0_147} OutVars{main_~l~0=v_main_~l~0_989, main_~n~0=v_main_~n~0_147} AuxVars[] AssignedVars[] [2021-05-03 00:30:45,188 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size [2021-05-03 00:30:45,250 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,254 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,461 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:30:45,520 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-03 00:30:45,532 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-03 00:30:45,542 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-05-03 00:30:45,599 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-03 00:30:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:45,835 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 17 [2021-05-03 00:30:46,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:46,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:31:23,033 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:23,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483956808] [2021-05-03 00:31:23,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1483956808] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:23,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:23,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2021-05-03 00:31:23,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946797095] [2021-05-03 00:31:23,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-03 00:31:23,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:23,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-03 00:31:23,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=12845, Unknown=0, NotChecked=0, Total=13110 [2021-05-03 00:31:23,035 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 113 states have internal predecessors, (116), 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) [2021-05-03 00:31:24,760 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:26,017 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-03 00:31:26,471 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-03 00:31:26,921 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:27,384 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:27,910 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:28,367 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:31:28,839 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:29,291 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:31:29,768 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:30,206 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:31:30,682 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:31:31,137 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:31:31,594 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:32,046 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 00:31:32,509 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:32,985 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:31:33,468 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 00:31:33,951 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:31:34,421 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:34,902 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:35,383 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:35,880 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:31:36,421 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:31:36,925 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 00:31:37,387 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:37,874 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:38,384 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 00:31:38,861 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 48