/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/loop-acceleration/nested_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:26:16,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:26:16,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:26:16,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:26:16,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 23:26:16,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 23:26:16,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 23:26:16,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 23:26:16,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 23:26:16,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 23:26:16,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 23:26:16,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 23:26:16,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 23:26:16,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 23:26:16,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 23:26:16,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 23:26:16,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 23:26:16,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:26:16,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:26:16,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:26:16,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:26:16,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:26:16,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:26:16,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:26:16,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:26:16,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:26:16,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:26:16,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:26:16,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:26:16,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:26:16,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:26:16,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:26:16,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:26:16,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:26:16,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:26:16,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:26:16,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:26:16,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:26:16,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:26:16,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:26:16,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:26:16,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:26:16,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:26:16,849 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:26:16,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:26:17,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:26:17,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:26:17,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:26:17,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:26:17,141 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:26:17,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/nested_1-1.c [2021-05-02 23:26:17,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a47f997a/6413a22c8e4541a287421e05610cbb3e/FLAGb9597564b [2021-05-02 23:26:17,580 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:26:17,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_1-1.c [2021-05-02 23:26:17,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a47f997a/6413a22c8e4541a287421e05610cbb3e/FLAGb9597564b [2021-05-02 23:26:18,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a47f997a/6413a22c8e4541a287421e05610cbb3e [2021-05-02 23:26:18,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:26:18,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:26:18,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:26:18,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:26:18,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:26:18,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:26:18" (1/1) ... [2021-05-02 23:26:18,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b761825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18, skipping insertion in model container [2021-05-02 23:26:18,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:26:18" (1/1) ... [2021-05-02 23:26:18,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:26:18,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:26:18,127 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_1-1.c[322,335] [2021-05-02 23:26:18,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:26:18,143 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:26:18,153 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_1-1.c[322,335] [2021-05-02 23:26:18,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:26:18,195 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:26:18,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18 WrapperNode [2021-05-02 23:26:18,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:26:18,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:26:18,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:26:18,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:26:18,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18" (1/1) ... [2021-05-02 23:26:18,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18" (1/1) ... [2021-05-02 23:26:18,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18" (1/1) ... [2021-05-02 23:26:18,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18" (1/1) ... [2021-05-02 23:26:18,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18" (1/1) ... [2021-05-02 23:26:18,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18" (1/1) ... [2021-05-02 23:26:18,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18" (1/1) ... [2021-05-02 23:26:18,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:26:18,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:26:18,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:26:18,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:26:18,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18" (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 [2021-05-02 23:26:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:26:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:26:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:26:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:26:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:26:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:26:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:26:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:26:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:26:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:26:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:26:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:26:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:26:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:26:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:26:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:26:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:26:18,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:26:18,598 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 23:26:18,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:26:18 BoogieIcfgContainer [2021-05-02 23:26:18,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:26:18,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:26:18,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:26:18,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:26:18,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:26:18" (1/3) ... [2021-05-02 23:26:18,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150a1849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:26:18, skipping insertion in model container [2021-05-02 23:26:18,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:18" (2/3) ... [2021-05-02 23:26:18,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150a1849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:26:18, skipping insertion in model container [2021-05-02 23:26:18,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:26:18" (3/3) ... [2021-05-02 23:26:18,606 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1-1.c [2021-05-02 23:26:18,610 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:26:18,612 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:26:18,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:26:18,661 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:26:18,661 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:26:18,661 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:26:18,661 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:26:18,661 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:26:18,661 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:26:18,661 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:26:18,662 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:26:18,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 23:26:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:26:18,685 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:18,686 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:18,686 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:18,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:18,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2021311625, now seen corresponding path program 1 times [2021-05-02 23:26:18,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:18,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523303399] [2021-05-02 23:26:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:18,747 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:26:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:18,951 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:18,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523303399] [2021-05-02 23:26:18,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [523303399] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:18,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:18,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 23:26:18,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126541358] [2021-05-02 23:26:18,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 23:26:18,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:18,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 23:26:18,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:26:18,978 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:26:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:19,078 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2021-05-02 23:26:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 23:26:19,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 23:26:19,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:19,084 INFO L225 Difference]: With dead ends: 37 [2021-05-02 23:26:19,084 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 23:26:19,087 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:26:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 23:26:19,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-05-02 23:26:19,110 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) [2021-05-02 23:26:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-02 23:26:19,112 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-05-02 23:26:19,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:19,112 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-02 23:26:19,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:26:19,112 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-02 23:26:19,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 23:26:19,117 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:19,117 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:19,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:26:19,117 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:19,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:19,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2037585725, now seen corresponding path program 1 times [2021-05-02 23:26:19,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:19,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709537993] [2021-05-02 23:26:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:19,135 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:19,144 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:19,171 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:26:19,198 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:19,309 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:19,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709537993] [2021-05-02 23:26:19,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1709537993] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:19,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:19,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:26:19,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968538372] [2021-05-02 23:26:19,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:26:19,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:26:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:26:19,312 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-05-02 23:26:19,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:19,413 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-05-02 23:26:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:26:19,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 14 [2021-05-02 23:26:19,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:19,415 INFO L225 Difference]: With dead ends: 26 [2021-05-02 23:26:19,415 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 23:26:19,416 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-02 23:26:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 23:26:19,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-05-02 23:26:19,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-05-02 23:26:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-05-02 23:26:19,424 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2021-05-02 23:26:19,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:19,424 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-05-02 23:26:19,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-05-02 23:26:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-05-02 23:26:19,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 23:26:19,425 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:19,425 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:19,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:26:19,426 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:19,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:19,426 INFO L82 PathProgramCache]: Analyzing trace with hash -183414982, now seen corresponding path program 1 times [2021-05-02 23:26:19,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:19,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077461645] [2021-05-02 23:26:19,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:19,447 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_10 4294967296) 10) InVars {main_~y~0=v_main_~y~0_10} OutVars{main_~y~0=v_main_~y~0_10} AuxVars[] AssignedVars[] [2021-05-02 23:26:19,453 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:19,468 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:19,501 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:19,522 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:19,583 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:19,585 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:19,598 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:19,612 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:19,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:19,770 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:19,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077461645] [2021-05-02 23:26:19,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2077461645] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:19,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:19,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 23:26:19,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981773933] [2021-05-02 23:26:19,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 23:26:19,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:19,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 23:26:19,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:26:19,774 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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) [2021-05-02 23:26:19,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:19,932 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-05-02 23:26:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 23:26:19,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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 [2021-05-02 23:26:19,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:19,934 INFO L225 Difference]: With dead ends: 27 [2021-05-02 23:26:19,934 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 23:26:19,936 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 151.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:26:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 23:26:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-05-02 23:26:19,944 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) [2021-05-02 23:26:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-05-02 23:26:19,945 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2021-05-02 23:26:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:19,946 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-05-02 23:26:19,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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) [2021-05-02 23:26:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-05-02 23:26:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 23:26:19,947 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:19,947 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:19,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 23:26:19,948 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:19,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1461303203, now seen corresponding path program 2 times [2021-05-02 23:26:19,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:19,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689491382] [2021-05-02 23:26:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:19,966 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_19 4294967296) 10) InVars {main_~y~0=v_main_~y~0_19} OutVars{main_~y~0=v_main_~y~0_19} AuxVars[] AssignedVars[] [2021-05-02 23:26:19,975 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:19,988 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:20,011 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:20,031 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:20,058 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:20,059 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:20,069 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:20,076 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:20,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:20,181 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:20,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689491382] [2021-05-02 23:26:20,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1689491382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:20,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:20,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 23:26:20,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556526659] [2021-05-02 23:26:20,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 23:26:20,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:20,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 23:26:20,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-02 23:26:20,185 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-05-02 23:26:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:20,321 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-05-02 23:26:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 23:26:20,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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 16 [2021-05-02 23:26:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:20,322 INFO L225 Difference]: With dead ends: 28 [2021-05-02 23:26:20,322 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 23:26:20,323 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-05-02 23:26:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 23:26:20,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-05-02 23:26:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-05-02 23:26:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-02 23:26:20,327 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2021-05-02 23:26:20,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:20,327 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-02 23:26:20,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-05-02 23:26:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-02 23:26:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 23:26:20,328 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:20,328 INFO L523 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:20,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 23:26:20,328 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:20,328 INFO L82 PathProgramCache]: Analyzing trace with hash 907959386, now seen corresponding path program 3 times [2021-05-02 23:26:20,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:20,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552365723] [2021-05-02 23:26:20,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:20,344 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_30 4294967296) 10) InVars {main_~y~0=v_main_~y~0_30} OutVars{main_~y~0=v_main_~y~0_30} AuxVars[] AssignedVars[] [2021-05-02 23:26:20,351 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:20,353 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:20,371 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:20,393 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:20,420 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:20,421 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:20,431 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:20,438 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:20,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:20,548 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:20,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552365723] [2021-05-02 23:26:20,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1552365723] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:20,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:20,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 23:26:20,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116563563] [2021-05-02 23:26:20,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 23:26:20,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:20,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 23:26:20,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:26:20,560 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-05-02 23:26:20,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:20,707 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-02 23:26:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 23:26:20,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 17 [2021-05-02 23:26:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:20,708 INFO L225 Difference]: With dead ends: 29 [2021-05-02 23:26:20,709 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 23:26:20,709 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 160.8ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-05-02 23:26:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 23:26:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-05-02 23:26:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-05-02 23:26:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-05-02 23:26:20,713 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2021-05-02 23:26:20,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:20,713 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-05-02 23:26:20,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-05-02 23:26:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-05-02 23:26:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 23:26:20,714 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:20,714 INFO L523 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:20,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 23:26:20,714 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:20,715 INFO L82 PathProgramCache]: Analyzing trace with hash 934170243, now seen corresponding path program 4 times [2021-05-02 23:26:20,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:20,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838544368] [2021-05-02 23:26:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:20,727 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_43 4294967296) 10) InVars {main_~y~0=v_main_~y~0_43} OutVars{main_~y~0=v_main_~y~0_43} AuxVars[] AssignedVars[] [2021-05-02 23:26:20,731 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:20,747 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:20,764 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:20,784 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:20,805 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:20,806 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:20,815 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:20,829 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:20,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:20,956 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:20,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838544368] [2021-05-02 23:26:20,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1838544368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:20,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:20,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 23:26:20,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729878736] [2021-05-02 23:26:20,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 23:26:20,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:20,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 23:26:20,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:26:20,961 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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) [2021-05-02 23:26:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:21,139 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-05-02 23:26:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 23:26:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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 [2021-05-02 23:26:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:21,140 INFO L225 Difference]: With dead ends: 30 [2021-05-02 23:26:21,140 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 23:26:21,141 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 175.1ms TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-05-02 23:26:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 23:26:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-05-02 23:26:21,147 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) [2021-05-02 23:26:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-05-02 23:26:21,149 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2021-05-02 23:26:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:21,149 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-05-02 23:26:21,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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) [2021-05-02 23:26:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-05-02 23:26:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 23:26:21,150 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:21,150 INFO L523 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:21,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-02 23:26:21,150 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:21,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:21,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1746706810, now seen corresponding path program 5 times [2021-05-02 23:26:21,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:21,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960036784] [2021-05-02 23:26:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:21,164 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_58 4294967296) 10) InVars {main_~y~0=v_main_~y~0_58} OutVars{main_~y~0=v_main_~y~0_58} AuxVars[] AssignedVars[] [2021-05-02 23:26:21,179 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:21,198 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:21,216 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:21,229 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:21,261 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:21,266 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:21,277 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:21,283 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:21,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:21,418 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:21,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960036784] [2021-05-02 23:26:21,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1960036784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:21,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:21,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 23:26:21,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884686418] [2021-05-02 23:26:21,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 23:26:21,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:21,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 23:26:21,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-02 23:26:21,421 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:26:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:21,644 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-02 23:26:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 23:26:21,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-02 23:26:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:21,647 INFO L225 Difference]: With dead ends: 31 [2021-05-02 23:26:21,647 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 23:26:21,647 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 235.3ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-05-02 23:26:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 23:26:21,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-05-02 23:26:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-05-02 23:26:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-05-02 23:26:21,656 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2021-05-02 23:26:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:21,656 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-05-02 23:26:21,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:26:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-05-02 23:26:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 23:26:21,658 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:21,659 INFO L523 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:21,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-02 23:26:21,659 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:21,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:21,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1165536611, now seen corresponding path program 6 times [2021-05-02 23:26:21,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:21,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648666312] [2021-05-02 23:26:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:21,671 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_75 4294967296) 10) InVars {main_~y~0=v_main_~y~0_75} OutVars{main_~y~0=v_main_~y~0_75} AuxVars[] AssignedVars[] [2021-05-02 23:26:21,674 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:21,685 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:21,702 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:21,715 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:21,741 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:21,742 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:21,751 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:21,761 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:21,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:21,919 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:21,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648666312] [2021-05-02 23:26:21,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1648666312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:21,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:21,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-02 23:26:21,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155539327] [2021-05-02 23:26:21,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 23:26:21,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:21,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 23:26:21,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 23:26:21,922 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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) [2021-05-02 23:26:22,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:22,227 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-02 23:26:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 23:26:22,227 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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 20 [2021-05-02 23:26:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:22,229 INFO L225 Difference]: With dead ends: 32 [2021-05-02 23:26:22,229 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 23:26:22,231 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 281.1ms TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-05-02 23:26:22,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 23:26:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-05-02 23:26:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2021-05-02 23:26:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-05-02 23:26:22,239 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2021-05-02 23:26:22,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:22,239 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-05-02 23:26:22,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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) [2021-05-02 23:26:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-05-02 23:26:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 23:26:22,240 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:22,240 INFO L523 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:22,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-02 23:26:22,240 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:22,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:22,241 INFO L82 PathProgramCache]: Analyzing trace with hash 329129626, now seen corresponding path program 7 times [2021-05-02 23:26:22,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:22,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909580991] [2021-05-02 23:26:22,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:22,258 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_94 4294967296) 10) InVars {main_~y~0=v_main_~y~0_94} OutVars{main_~y~0=v_main_~y~0_94} AuxVars[] AssignedVars[] [2021-05-02 23:26:22,263 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:22,278 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:22,297 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:22,325 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:22,363 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:22,364 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:22,375 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:22,383 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:22,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:22,575 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:22,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909580991] [2021-05-02 23:26:22,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1909580991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:22,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:22,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-02 23:26:22,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971541802] [2021-05-02 23:26:22,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 23:26:22,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:22,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 23:26:22,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-02 23:26:22,579 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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) [2021-05-02 23:26:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:22,910 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-05-02 23:26:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 23:26:22,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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 [2021-05-02 23:26:22,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:22,912 INFO L225 Difference]: With dead ends: 33 [2021-05-02 23:26:22,912 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 23:26:22,915 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 348.5ms TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-05-02 23:26:22,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 23:26:22,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-05-02 23:26:22,922 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) [2021-05-02 23:26:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-05-02 23:26:22,923 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2021-05-02 23:26:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:22,923 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-05-02 23:26:22,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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) [2021-05-02 23:26:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-05-02 23:26:22,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 23:26:22,924 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:22,924 INFO L523 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:22,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-02 23:26:22,925 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:22,925 INFO L82 PathProgramCache]: Analyzing trace with hash 170316867, now seen corresponding path program 8 times [2021-05-02 23:26:22,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:22,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238737351] [2021-05-02 23:26:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:22,944 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_115 4294967296) 10) InVars {main_~y~0=v_main_~y~0_115} OutVars{main_~y~0=v_main_~y~0_115} AuxVars[] AssignedVars[] [2021-05-02 23:26:22,948 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:22,959 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:22,985 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:23,003 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:23,033 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:23,035 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:23,046 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:23,053 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:23,253 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:23,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238737351] [2021-05-02 23:26:23,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1238737351] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:23,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:23,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-02 23:26:23,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247514573] [2021-05-02 23:26:23,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 23:26:23,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:23,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 23:26:23,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-05-02 23:26:23,255 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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) [2021-05-02 23:26:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:23,559 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-02 23:26:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 23:26:23,560 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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 22 [2021-05-02 23:26:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:23,561 INFO L225 Difference]: With dead ends: 34 [2021-05-02 23:26:23,561 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 23:26:23,561 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 342.5ms TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-05-02 23:26:23,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 23:26:23,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-05-02 23:26:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2021-05-02 23:26:23,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-05-02 23:26:23,567 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2021-05-02 23:26:23,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:23,567 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-05-02 23:26:23,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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) [2021-05-02 23:26:23,567 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-05-02 23:26:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 23:26:23,568 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:23,568 INFO L523 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:23,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-02 23:26:23,568 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:23,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:23,569 INFO L82 PathProgramCache]: Analyzing trace with hash -457911366, now seen corresponding path program 9 times [2021-05-02 23:26:23,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:23,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379070637] [2021-05-02 23:26:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:23,581 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_138 4294967296) 10) InVars {main_~y~0=v_main_~y~0_138} OutVars{main_~y~0=v_main_~y~0_138} AuxVars[] AssignedVars[] [2021-05-02 23:26:23,584 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:23,585 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:23,606 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:23,632 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:23,662 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:23,663 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:23,678 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:23,685 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:23,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:23,873 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:23,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379070637] [2021-05-02 23:26:23,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [379070637] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:23,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:23,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-02 23:26:23,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894571393] [2021-05-02 23:26:23,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 23:26:23,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 23:26:23,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 23:26:23,875 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-05-02 23:26:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:24,274 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-05-02 23:26:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 23:26:24,274 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 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 23 [2021-05-02 23:26:24,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:24,275 INFO L225 Difference]: With dead ends: 35 [2021-05-02 23:26:24,275 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 23:26:24,276 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 398.8ms TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-05-02 23:26:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 23:26:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-05-02 23:26:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2021-05-02 23:26:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-05-02 23:26:24,281 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 23 [2021-05-02 23:26:24,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:24,281 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-05-02 23:26:24,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-05-02 23:26:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-05-02 23:26:24,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 23:26:24,282 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:24,282 INFO L523 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:24,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-02 23:26:24,283 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:24,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:24,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1541849891, now seen corresponding path program 10 times [2021-05-02 23:26:24,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:24,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137962597] [2021-05-02 23:26:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:24,297 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_163 4294967296) 10) InVars {main_~y~0=v_main_~y~0_163} OutVars{main_~y~0=v_main_~y~0_163} AuxVars[] AssignedVars[] [2021-05-02 23:26:24,300 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:24,310 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:24,333 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:24,350 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:24,388 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_49 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_49} OutVars{main_~x~0=v_main_~x~0_49} AuxVars[] AssignedVars[] [2021-05-02 23:26:24,394 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:24,411 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:24,430 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:24,449 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:24,475 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:24,775 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:24,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137962597] [2021-05-02 23:26:24,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2137962597] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:24,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:24,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-02 23:26:24,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883438431] [2021-05-02 23:26:24,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 23:26:24,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:24,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 23:26:24,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-05-02 23:26:24,777 INFO L87 Difference]: Start difference. First operand 25 states and 26 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) [2021-05-02 23:26:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:25,259 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-05-02 23:26:25,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 23:26:25,259 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 [2021-05-02 23:26:25,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:25,260 INFO L225 Difference]: With dead ends: 36 [2021-05-02 23:26:25,260 INFO L226 Difference]: Without dead ends: 28 [2021-05-02 23:26:25,261 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 533.6ms TimeCoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 23:26:25,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-02 23:26:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-05-02 23:26:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 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) [2021-05-02 23:26:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-05-02 23:26:25,267 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2021-05-02 23:26:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:25,267 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-05-02 23:26:25,267 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) [2021-05-02 23:26:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-05-02 23:26:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 23:26:25,268 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:25,268 INFO L523 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:25,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-02 23:26:25,268 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:25,269 INFO L82 PathProgramCache]: Analyzing trace with hash -620876823, now seen corresponding path program 11 times [2021-05-02 23:26:25,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:25,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321080402] [2021-05-02 23:26:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:25,291 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_191 4294967296) 10) InVars {main_~y~0=v_main_~y~0_191} OutVars{main_~y~0=v_main_~y~0_191} AuxVars[] AssignedVars[] [2021-05-02 23:26:25,293 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:25,295 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:25,309 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:25,325 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:25,347 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_53 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_193 4294967296))) InVars {main_~x~0=v_main_~x~0_53, main_~y~0=v_main_~y~0_193} OutVars{main_~x~0=v_main_~x~0_53, main_~y~0=v_main_~y~0_193} AuxVars[] AssignedVars[] [2021-05-02 23:26:25,349 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:25,368 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:25,375 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:25,386 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:25,416 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_57 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_57} OutVars{main_~x~0=v_main_~x~0_57} AuxVars[] AssignedVars[] [2021-05-02 23:26:25,418 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:25,419 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:25,432 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:25,457 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:25,481 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:25,482 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:25,495 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:26:25,499 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:25,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:25,887 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:25,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321080402] [2021-05-02 23:26:25,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1321080402] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:25,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:25,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-02 23:26:25,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41529989] [2021-05-02 23:26:25,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 23:26:25,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:25,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 23:26:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-05-02 23:26:25,902 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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) [2021-05-02 23:26:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:26,417 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-05-02 23:26:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 23:26:26,417 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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 [2021-05-02 23:26:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:26,418 INFO L225 Difference]: With dead ends: 39 [2021-05-02 23:26:26,418 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 23:26:26,419 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 592.7ms TimeCoverageRelationStatistics Valid=205, Invalid=1127, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 23:26:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 23:26:26,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-05-02 23:26:26,423 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) [2021-05-02 23:26:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-05-02 23:26:26,423 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 27 [2021-05-02 23:26:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:26,424 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-05-02 23:26:26,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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) [2021-05-02 23:26:26,424 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-05-02 23:26:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 23:26:26,424 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:26,424 INFO L523 BasicCegarLoop]: trace histogram [11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:26,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-02 23:26:26,425 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:26,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:26,425 INFO L82 PathProgramCache]: Analyzing trace with hash 784888020, now seen corresponding path program 12 times [2021-05-02 23:26:26,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:26,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046656303] [2021-05-02 23:26:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:26,446 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_227 4294967296) 10) InVars {main_~y~0=v_main_~y~0_227} OutVars{main_~y~0=v_main_~y~0_227} AuxVars[] AssignedVars[] [2021-05-02 23:26:26,448 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:26,449 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:26,468 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:26,486 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:26,509 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_65 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_229 4294967296))) InVars {main_~x~0=v_main_~x~0_65, main_~y~0=v_main_~y~0_229} OutVars{main_~x~0=v_main_~x~0_65, main_~y~0=v_main_~y~0_229} AuxVars[] AssignedVars[] [2021-05-02 23:26:26,512 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:26,525 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:26,529 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:26,545 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:26,575 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_69 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_69} OutVars{main_~x~0=v_main_~x~0_69} AuxVars[] AssignedVars[] [2021-05-02 23:26:26,577 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:26,590 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:26,604 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:26,622 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:26,645 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:26,645 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:26,654 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:26,660 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:27,060 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:27,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046656303] [2021-05-02 23:26:27,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2046656303] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:27,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:27,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-02 23:26:27,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386620142] [2021-05-02 23:26:27,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 23:26:27,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:27,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 23:26:27,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2021-05-02 23:26:27,062 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 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) [2021-05-02 23:26:27,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:27,591 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 23:26:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 23:26:27,592 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 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 28 [2021-05-02 23:26:27,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:27,592 INFO L225 Difference]: With dead ends: 38 [2021-05-02 23:26:27,592 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 23:26:27,593 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 643.9ms TimeCoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 23:26:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 23:26:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 23:26:27,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 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) [2021-05-02 23:26:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-05-02 23:26:27,598 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 28 [2021-05-02 23:26:27,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:27,598 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-05-02 23:26:27,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 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) [2021-05-02 23:26:27,598 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-05-02 23:26:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 23:26:27,599 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:27,599 INFO L523 BasicCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:27,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-02 23:26:27,599 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:27,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1413925193, now seen corresponding path program 13 times [2021-05-02 23:26:27,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:27,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776420795] [2021-05-02 23:26:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:27,622 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_265 4294967296) 10) InVars {main_~y~0=v_main_~y~0_265} OutVars{main_~y~0=v_main_~y~0_265} AuxVars[] AssignedVars[] [2021-05-02 23:26:27,624 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:27,632 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:27,645 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:27,657 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:27,677 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_77 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_267 4294967296))) InVars {main_~x~0=v_main_~x~0_77, main_~y~0=v_main_~y~0_267} OutVars{main_~x~0=v_main_~x~0_77, main_~y~0=v_main_~y~0_267} AuxVars[] AssignedVars[] [2021-05-02 23:26:27,679 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:27,680 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:27,683 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:27,703 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:27,732 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_81 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_81} OutVars{main_~x~0=v_main_~x~0_81} AuxVars[] AssignedVars[] [2021-05-02 23:26:27,734 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:27,735 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:27,750 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:27,785 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:27,809 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:27,810 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:27,818 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:27,832 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:27,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:28,240 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:28,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776420795] [2021-05-02 23:26:28,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1776420795] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:28,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:28,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-02 23:26:28,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512862976] [2021-05-02 23:26:28,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 23:26:28,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:28,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 23:26:28,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-05-02 23:26:28,243 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 states have internal predecessors, (25), 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) [2021-05-02 23:26:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:28,815 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-05-02 23:26:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 23:26:28,815 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 states have internal predecessors, (25), 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 29 [2021-05-02 23:26:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:28,816 INFO L225 Difference]: With dead ends: 39 [2021-05-02 23:26:28,816 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 23:26:28,817 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 668.6ms TimeCoverageRelationStatistics Valid=183, Invalid=1299, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 23:26:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 23:26:28,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-02 23:26:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:26:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-05-02 23:26:28,821 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 29 [2021-05-02 23:26:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:28,822 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-05-02 23:26:28,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 states have internal predecessors, (25), 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) [2021-05-02 23:26:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-05-02 23:26:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-02 23:26:28,822 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:28,822 INFO L523 BasicCegarLoop]: trace histogram [13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:28,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-02 23:26:28,823 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:28,823 INFO L82 PathProgramCache]: Analyzing trace with hash -560758924, now seen corresponding path program 14 times [2021-05-02 23:26:28,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:28,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561927254] [2021-05-02 23:26:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:28,850 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_305 4294967296) 10) InVars {main_~y~0=v_main_~y~0_305} OutVars{main_~y~0=v_main_~y~0_305} AuxVars[] AssignedVars[] [2021-05-02 23:26:28,852 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:28,853 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:28,877 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:28,895 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:28,915 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_89 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_307 4294967296))) InVars {main_~x~0=v_main_~x~0_89, main_~y~0=v_main_~y~0_307} OutVars{main_~x~0=v_main_~x~0_89, main_~y~0=v_main_~y~0_307} AuxVars[] AssignedVars[] [2021-05-02 23:26:28,918 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:28,932 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:28,935 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:28,944 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:28,982 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_93 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_93} OutVars{main_~x~0=v_main_~x~0_93} AuxVars[] AssignedVars[] [2021-05-02 23:26:28,983 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:28,984 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:29,000 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:29,034 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:29,060 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:29,061 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:29,068 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:29,074 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:29,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:29,470 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:29,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561927254] [2021-05-02 23:26:29,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [561927254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:29,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:29,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-02 23:26:29,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088173365] [2021-05-02 23:26:29,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 23:26:29,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:29,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 23:26:29,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-05-02 23:26:29,472 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 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) [2021-05-02 23:26:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:30,053 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-05-02 23:26:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 23:26:30,054 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 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 [2021-05-02 23:26:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:30,054 INFO L225 Difference]: With dead ends: 42 [2021-05-02 23:26:30,054 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 23:26:30,055 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 717.2ms TimeCoverageRelationStatistics Valid=238, Invalid=1568, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 23:26:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 23:26:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-05-02 23:26:30,060 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) [2021-05-02 23:26:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-05-02 23:26:30,060 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2021-05-02 23:26:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:30,060 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-05-02 23:26:30,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 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) [2021-05-02 23:26:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-05-02 23:26:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 23:26:30,061 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:30,061 INFO L523 BasicCegarLoop]: trace histogram [14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:30,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-02 23:26:30,061 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:30,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:30,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1646424407, now seen corresponding path program 15 times [2021-05-02 23:26:30,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:30,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084468186] [2021-05-02 23:26:30,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:30,082 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_347 4294967296) 10) InVars {main_~y~0=v_main_~y~0_347} OutVars{main_~y~0=v_main_~y~0_347} AuxVars[] AssignedVars[] [2021-05-02 23:26:30,088 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:30,090 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:30,105 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:30,123 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:30,142 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_101 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_349 4294967296))) InVars {main_~x~0=v_main_~x~0_101, main_~y~0=v_main_~y~0_349} OutVars{main_~x~0=v_main_~x~0_101, main_~y~0=v_main_~y~0_349} AuxVars[] AssignedVars[] [2021-05-02 23:26:30,144 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:30,156 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:30,159 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:30,167 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:30,199 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_105 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_105} OutVars{main_~x~0=v_main_~x~0_105} AuxVars[] AssignedVars[] [2021-05-02 23:26:30,200 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:30,201 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:30,214 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:30,239 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:30,260 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:30,262 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:30,270 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:30,276 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:30,751 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:30,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084468186] [2021-05-02 23:26:30,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1084468186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:30,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:30,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-02 23:26:30,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555429626] [2021-05-02 23:26:30,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 23:26:30,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:30,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 23:26:30,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2021-05-02 23:26:30,753 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 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) [2021-05-02 23:26:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:31,352 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-05-02 23:26:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 23:26:31,353 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 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 31 [2021-05-02 23:26:31,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:31,353 INFO L225 Difference]: With dead ends: 43 [2021-05-02 23:26:31,354 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 23:26:31,354 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 773.9ms TimeCoverageRelationStatistics Valid=249, Invalid=1731, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 23:26:31,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 23:26:31,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 23:26:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-05-02 23:26:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-05-02 23:26:31,360 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 31 [2021-05-02 23:26:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:31,360 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-05-02 23:26:31,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 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) [2021-05-02 23:26:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-05-02 23:26:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-02 23:26:31,360 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:31,360 INFO L523 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:31,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-02 23:26:31,361 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:31,361 INFO L82 PathProgramCache]: Analyzing trace with hash -942316012, now seen corresponding path program 16 times [2021-05-02 23:26:31,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:31,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053014082] [2021-05-02 23:26:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:31,380 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_391 4294967296) 10) InVars {main_~y~0=v_main_~y~0_391} OutVars{main_~y~0=v_main_~y~0_391} AuxVars[] AssignedVars[] [2021-05-02 23:26:31,382 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:31,388 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:31,402 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:31,428 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:31,449 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_113 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_393 4294967296))) InVars {main_~x~0=v_main_~x~0_113, main_~y~0=v_main_~y~0_393} OutVars{main_~x~0=v_main_~x~0_113, main_~y~0=v_main_~y~0_393} AuxVars[] AssignedVars[] [2021-05-02 23:26:31,458 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:31,473 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:31,476 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:31,487 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:31,523 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_117 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_117} OutVars{main_~x~0=v_main_~x~0_117} AuxVars[] AssignedVars[] [2021-05-02 23:26:31,526 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:31,527 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:31,548 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:31,576 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:31,599 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:31,600 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:31,612 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:31,627 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:31,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:32,073 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:32,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053014082] [2021-05-02 23:26:32,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1053014082] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:32,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:32,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-02 23:26:32,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284213544] [2021-05-02 23:26:32,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 23:26:32,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:32,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 23:26:32,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2021-05-02 23:26:32,075 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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) [2021-05-02 23:26:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:32,711 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-02 23:26:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 23:26:32,712 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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 32 [2021-05-02 23:26:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:32,712 INFO L225 Difference]: With dead ends: 42 [2021-05-02 23:26:32,712 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 23:26:32,713 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 792.4ms TimeCoverageRelationStatistics Valid=207, Invalid=1773, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 23:26:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 23:26:32,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 23:26:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 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) [2021-05-02 23:26:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-05-02 23:26:32,718 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 32 [2021-05-02 23:26:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:32,719 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-05-02 23:26:32,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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) [2021-05-02 23:26:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-05-02 23:26:32,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 23:26:32,719 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:32,719 INFO L523 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:32,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-02 23:26:32,719 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:32,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:32,720 INFO L82 PathProgramCache]: Analyzing trace with hash -589792247, now seen corresponding path program 17 times [2021-05-02 23:26:32,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:32,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254504615] [2021-05-02 23:26:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:32,740 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_437 4294967296) 10) InVars {main_~y~0=v_main_~y~0_437} OutVars{main_~y~0=v_main_~y~0_437} AuxVars[] AssignedVars[] [2021-05-02 23:26:32,741 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:32,748 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:32,765 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:32,777 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:32,797 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_125 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_439 4294967296))) InVars {main_~x~0=v_main_~x~0_125, main_~y~0=v_main_~y~0_439} OutVars{main_~x~0=v_main_~x~0_125, main_~y~0=v_main_~y~0_439} AuxVars[] AssignedVars[] [2021-05-02 23:26:32,799 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:32,812 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:32,816 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:32,825 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:32,851 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_129 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_129} OutVars{main_~x~0=v_main_~x~0_129} AuxVars[] AssignedVars[] [2021-05-02 23:26:32,854 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:32,854 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:32,867 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:32,891 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:32,914 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:32,915 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:32,922 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:32,928 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:33,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:33,362 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:33,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254504615] [2021-05-02 23:26:33,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [254504615] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:33,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:33,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-02 23:26:33,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508626210] [2021-05-02 23:26:33,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 23:26:33,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:33,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 23:26:33,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2021-05-02 23:26:33,363 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 24 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) [2021-05-02 23:26:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:34,011 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-05-02 23:26:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 23:26:34,012 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.16) internal successors, (29), 24 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 [2021-05-02 23:26:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:34,012 INFO L225 Difference]: With dead ends: 45 [2021-05-02 23:26:34,012 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 23:26:34,013 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 806.4ms TimeCoverageRelationStatistics Valid=271, Invalid=2081, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 23:26:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 23:26:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-05-02 23:26:34,018 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) [2021-05-02 23:26:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-05-02 23:26:34,018 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 33 [2021-05-02 23:26:34,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:34,019 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-05-02 23:26:34,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 1.16) internal successors, (29), 24 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) [2021-05-02 23:26:34,019 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-05-02 23:26:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 23:26:34,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:34,033 INFO L523 BasicCegarLoop]: trace histogram [17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:34,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-02 23:26:34,033 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:34,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1748509876, now seen corresponding path program 18 times [2021-05-02 23:26:34,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:34,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111834969] [2021-05-02 23:26:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:34,065 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_485 4294967296) 10) InVars {main_~y~0=v_main_~y~0_485} OutVars{main_~y~0=v_main_~y~0_485} AuxVars[] AssignedVars[] [2021-05-02 23:26:34,067 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:34,074 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:34,096 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:34,106 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:34,124 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_137 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_487 4294967296))) InVars {main_~x~0=v_main_~x~0_137, main_~y~0=v_main_~y~0_487} OutVars{main_~x~0=v_main_~x~0_137, main_~y~0=v_main_~y~0_487} AuxVars[] AssignedVars[] [2021-05-02 23:26:34,126 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:34,126 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:34,129 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:34,148 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:34,172 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_141 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_141} OutVars{main_~x~0=v_main_~x~0_141} AuxVars[] AssignedVars[] [2021-05-02 23:26:34,173 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:34,174 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:34,190 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:34,214 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:34,239 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:34,240 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:34,248 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:34,253 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:34,718 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:34,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111834969] [2021-05-02 23:26:34,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1111834969] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:34,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:34,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-02 23:26:34,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927691263] [2021-05-02 23:26:34,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 23:26:34,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:34,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 23:26:34,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2021-05-02 23:26:34,720 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 states have internal predecessors, (30), 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) [2021-05-02 23:26:35,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:35,498 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-05-02 23:26:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 23:26:35,498 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 states have internal predecessors, (30), 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 34 [2021-05-02 23:26:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:35,499 INFO L225 Difference]: With dead ends: 46 [2021-05-02 23:26:35,499 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 23:26:35,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 898.2ms TimeCoverageRelationStatistics Valid=282, Invalid=2268, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 23:26:35,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 23:26:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-05-02 23:26:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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) [2021-05-02 23:26:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-05-02 23:26:35,507 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2021-05-02 23:26:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:35,507 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-05-02 23:26:35,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 states have internal predecessors, (30), 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) [2021-05-02 23:26:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-05-02 23:26:35,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 23:26:35,508 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:35,508 INFO L523 BasicCegarLoop]: trace histogram [18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:35,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-02 23:26:35,509 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:35,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1221431657, now seen corresponding path program 19 times [2021-05-02 23:26:35,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:35,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053805808] [2021-05-02 23:26:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:35,537 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_535 4294967296) 10) InVars {main_~y~0=v_main_~y~0_535} OutVars{main_~y~0=v_main_~y~0_535} AuxVars[] AssignedVars[] [2021-05-02 23:26:35,539 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:35,540 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:35,558 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:35,599 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:35,625 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_537 4294967296)) (< (mod (+ v_main_~x~0_149 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_149, main_~y~0=v_main_~y~0_537} OutVars{main_~x~0=v_main_~x~0_149, main_~y~0=v_main_~y~0_537} AuxVars[] AssignedVars[] [2021-05-02 23:26:35,628 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:35,629 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:35,633 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:35,662 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:35,703 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_153 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_153} OutVars{main_~x~0=v_main_~x~0_153} AuxVars[] AssignedVars[] [2021-05-02 23:26:35,705 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:35,719 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:35,737 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:35,761 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:35,788 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:35,789 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:35,797 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:35,803 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:35,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:36,317 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:36,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053805808] [2021-05-02 23:26:36,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2053805808] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:36,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:36,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-02 23:26:36,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200133362] [2021-05-02 23:26:36,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 23:26:36,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:36,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 23:26:36,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2021-05-02 23:26:36,319 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-05-02 23:26:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:37,149 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-05-02 23:26:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 23:26:37,150 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 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 35 [2021-05-02 23:26:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:37,150 INFO L225 Difference]: With dead ends: 45 [2021-05-02 23:26:37,150 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 23:26:37,151 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 977.9ms TimeCoverageRelationStatistics Valid=231, Invalid=2319, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 23:26:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 23:26:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-05-02 23:26:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 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) [2021-05-02 23:26:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-05-02 23:26:37,159 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 35 [2021-05-02 23:26:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:37,159 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-05-02 23:26:37,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-05-02 23:26:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-05-02 23:26:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 23:26:37,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:37,160 INFO L523 BasicCegarLoop]: trace histogram [19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:37,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-02 23:26:37,160 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash 2061876052, now seen corresponding path program 20 times [2021-05-02 23:26:37,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:37,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992961717] [2021-05-02 23:26:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:37,185 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_587 4294967296) 10) InVars {main_~y~0=v_main_~y~0_587} OutVars{main_~y~0=v_main_~y~0_587} AuxVars[] AssignedVars[] [2021-05-02 23:26:37,186 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:37,195 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:37,210 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:37,224 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:37,244 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_161 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_589 4294967296))) InVars {main_~x~0=v_main_~x~0_161, main_~y~0=v_main_~y~0_589} OutVars{main_~x~0=v_main_~x~0_161, main_~y~0=v_main_~y~0_589} AuxVars[] AssignedVars[] [2021-05-02 23:26:37,250 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:37,251 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:37,255 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:37,281 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:37,322 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_165 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_165} OutVars{main_~x~0=v_main_~x~0_165} AuxVars[] AssignedVars[] [2021-05-02 23:26:37,324 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:37,341 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:37,370 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:37,392 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:37,417 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:37,418 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:37,428 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:37,435 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:38,057 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:38,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992961717] [2021-05-02 23:26:38,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1992961717] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:38,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:38,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-02 23:26:38,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098260236] [2021-05-02 23:26:38,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 23:26:38,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:38,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 23:26:38,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2021-05-02 23:26:38,059 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 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) [2021-05-02 23:26:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:38,835 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-02 23:26:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 23:26:38,836 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 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 [2021-05-02 23:26:38,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:38,836 INFO L225 Difference]: With dead ends: 48 [2021-05-02 23:26:38,836 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 23:26:38,840 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 1027.6ms TimeCoverageRelationStatistics Valid=288, Invalid=2574, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 23:26:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 23:26:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-05-02 23:26:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 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) [2021-05-02 23:26:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-05-02 23:26:38,848 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2021-05-02 23:26:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:38,848 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-05-02 23:26:38,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 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) [2021-05-02 23:26:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-05-02 23:26:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 23:26:38,849 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:38,850 INFO L523 BasicCegarLoop]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:38,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-02 23:26:38,850 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:38,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1949118775, now seen corresponding path program 21 times [2021-05-02 23:26:38,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:38,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565136172] [2021-05-02 23:26:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:38,881 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_641 4294967296) 10) InVars {main_~y~0=v_main_~y~0_641} OutVars{main_~y~0=v_main_~y~0_641} AuxVars[] AssignedVars[] [2021-05-02 23:26:38,883 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:38,884 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:38,899 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:38,919 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:38,941 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_173 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_643 4294967296))) InVars {main_~x~0=v_main_~x~0_173, main_~y~0=v_main_~y~0_643} OutVars{main_~x~0=v_main_~x~0_173, main_~y~0=v_main_~y~0_643} AuxVars[] AssignedVars[] [2021-05-02 23:26:38,944 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:38,962 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:38,966 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:38,981 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:39,018 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_177 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_177} OutVars{main_~x~0=v_main_~x~0_177} AuxVars[] AssignedVars[] [2021-05-02 23:26:39,022 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:39,038 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:39,058 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:39,078 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:39,102 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:26:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:39,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:39,708 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:39,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565136172] [2021-05-02 23:26:39,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1565136172] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:39,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:39,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-02 23:26:39,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440078181] [2021-05-02 23:26:39,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 23:26:39,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:39,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 23:26:39,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2021-05-02 23:26:39,710 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-05-02 23:26:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:40,638 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2021-05-02 23:26:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 23:26:40,639 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 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 37 [2021-05-02 23:26:40,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:40,639 INFO L225 Difference]: With dead ends: 46 [2021-05-02 23:26:40,639 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 23:26:40,640 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1161.0ms TimeCoverageRelationStatistics Valid=247, Invalid=2723, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 23:26:40,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 23:26:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-02 23:26:40,646 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) [2021-05-02 23:26:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-05-02 23:26:40,647 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 37 [2021-05-02 23:26:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:40,647 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-05-02 23:26:40,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-05-02 23:26:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-05-02 23:26:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 23:26:40,647 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:40,647 INFO L523 BasicCegarLoop]: trace histogram [20, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:40,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-02 23:26:40,647 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:40,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1730300285, now seen corresponding path program 22 times [2021-05-02 23:26:40,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:40,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73352445] [2021-05-02 23:26:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:40,667 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_684 4294967296) 10) InVars {main_~y~0=v_main_~y~0_684} OutVars{main_~y~0=v_main_~y~0_684} AuxVars[] AssignedVars[] [2021-05-02 23:26:40,669 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:40,669 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:40,682 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:40,706 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:40,725 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_182 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_686 4294967296))) InVars {main_~x~0=v_main_~x~0_182, main_~y~0=v_main_~y~0_686} OutVars{main_~x~0=v_main_~x~0_182, main_~y~0=v_main_~y~0_686} AuxVars[] AssignedVars[] [2021-05-02 23:26:40,727 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:40,728 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:40,730 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:40,749 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:40,776 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_186 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_186} OutVars{main_~x~0=v_main_~x~0_186} AuxVars[] AssignedVars[] [2021-05-02 23:26:40,777 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:40,798 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:40,813 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:40,827 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:40,849 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:40,850 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:40,856 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:26:40,861 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:40,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:41,468 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:41,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73352445] [2021-05-02 23:26:41,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [73352445] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:41,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:41,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-02 23:26:41,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924450476] [2021-05-02 23:26:41,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 23:26:41,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:41,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 23:26:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 23:26:41,470 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 29 states have internal predecessors, (36), 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) [2021-05-02 23:26:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:42,328 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2021-05-02 23:26:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 23:26:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 29 states have internal predecessors, (36), 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 40 [2021-05-02 23:26:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:42,329 INFO L225 Difference]: With dead ends: 50 [2021-05-02 23:26:42,329 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 23:26:42,331 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1150.8ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 23:26:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 23:26:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 23:26:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 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) [2021-05-02 23:26:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-05-02 23:26:42,339 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 40 [2021-05-02 23:26:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:42,340 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-05-02 23:26:42,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 29 states have internal predecessors, (36), 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) [2021-05-02 23:26:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-05-02 23:26:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 23:26:42,340 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:42,340 INFO L523 BasicCegarLoop]: trace histogram [21, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:42,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-02 23:26:42,341 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:42,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:42,341 INFO L82 PathProgramCache]: Analyzing trace with hash 752499066, now seen corresponding path program 23 times [2021-05-02 23:26:42,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:42,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923933358] [2021-05-02 23:26:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:42,365 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_731 4294967296) 10) InVars {main_~y~0=v_main_~y~0_731} OutVars{main_~y~0=v_main_~y~0_731} AuxVars[] AssignedVars[] [2021-05-02 23:26:42,367 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:42,377 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:42,403 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:42,428 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:42,449 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_733 4294967296)) (< (mod (+ v_main_~x~0_195 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_195, main_~y~0=v_main_~y~0_733} OutVars{main_~x~0=v_main_~x~0_195, main_~y~0=v_main_~y~0_733} AuxVars[] AssignedVars[] [2021-05-02 23:26:42,451 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:42,467 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:42,471 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:42,484 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:42,513 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_199 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_199} OutVars{main_~x~0=v_main_~x~0_199} AuxVars[] AssignedVars[] [2021-05-02 23:26:42,515 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:42,516 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:42,533 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:42,563 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:42,586 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:42,587 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:42,595 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:42,601 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:42,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:43,220 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:43,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923933358] [2021-05-02 23:26:43,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [923933358] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:43,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:43,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-02 23:26:43,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069394098] [2021-05-02 23:26:43,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 23:26:43,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:43,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 23:26:43,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 23:26:43,222 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 30 states have internal predecessors, (37), 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) [2021-05-02 23:26:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:44,260 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-05-02 23:26:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 23:26:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 30 states have internal predecessors, (37), 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 41 [2021-05-02 23:26:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:44,262 INFO L225 Difference]: With dead ends: 51 [2021-05-02 23:26:44,262 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 23:26:44,263 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1213.1ms TimeCoverageRelationStatistics Valid=263, Invalid=3159, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 23:26:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 23:26:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-02 23:26:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 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) [2021-05-02 23:26:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-05-02 23:26:44,271 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 41 [2021-05-02 23:26:44,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:44,271 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-05-02 23:26:44,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 30 states have internal predecessors, (37), 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) [2021-05-02 23:26:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-05-02 23:26:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-02 23:26:44,272 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:44,272 INFO L523 BasicCegarLoop]: trace histogram [22, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:44,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-02 23:26:44,272 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:44,273 INFO L82 PathProgramCache]: Analyzing trace with hash 409867619, now seen corresponding path program 24 times [2021-05-02 23:26:44,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:44,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162844533] [2021-05-02 23:26:44,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:44,300 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_780 4294967296) 10) InVars {main_~y~0=v_main_~y~0_780} OutVars{main_~y~0=v_main_~y~0_780} AuxVars[] AssignedVars[] [2021-05-02 23:26:44,303 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:44,304 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:44,319 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:44,342 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:44,364 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_208 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_782 4294967296))) InVars {main_~x~0=v_main_~x~0_208, main_~y~0=v_main_~y~0_782} OutVars{main_~x~0=v_main_~x~0_208, main_~y~0=v_main_~y~0_782} AuxVars[] AssignedVars[] [2021-05-02 23:26:44,365 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:44,366 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:44,370 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:44,398 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:44,428 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_212 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_212} OutVars{main_~x~0=v_main_~x~0_212} AuxVars[] AssignedVars[] [2021-05-02 23:26:44,435 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:44,449 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:44,472 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:44,490 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:44,516 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:44,519 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:44,529 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:44,536 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:44,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:45,198 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:45,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162844533] [2021-05-02 23:26:45,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [162844533] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:45,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:45,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-02 23:26:45,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736494584] [2021-05-02 23:26:45,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 23:26:45,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:45,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 23:26:45,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 23:26:45,200 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 33 states, 32 states have (on average 1.1875) internal successors, (38), 31 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) [2021-05-02 23:26:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:46,204 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-05-02 23:26:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 23:26:46,204 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.1875) internal successors, (38), 31 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 [2021-05-02 23:26:46,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:46,205 INFO L225 Difference]: With dead ends: 52 [2021-05-02 23:26:46,205 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 23:26:46,206 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 1226.4ms TimeCoverageRelationStatistics Valid=312, Invalid=3470, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 23:26:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 23:26:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-02 23:26:46,214 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) [2021-05-02 23:26:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-05-02 23:26:46,214 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2021-05-02 23:26:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:46,215 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-05-02 23:26:46,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 1.1875) internal successors, (38), 31 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) [2021-05-02 23:26:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-05-02 23:26:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 23:26:46,215 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:46,215 INFO L523 BasicCegarLoop]: trace histogram [23, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:46,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-02 23:26:46,216 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:46,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1621772646, now seen corresponding path program 25 times [2021-05-02 23:26:46,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:46,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424758446] [2021-05-02 23:26:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:46,238 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_831 4294967296) 10) InVars {main_~y~0=v_main_~y~0_831} OutVars{main_~y~0=v_main_~y~0_831} AuxVars[] AssignedVars[] [2021-05-02 23:26:46,240 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:46,241 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:46,255 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:46,282 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:46,308 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_221 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_833 4294967296))) InVars {main_~x~0=v_main_~x~0_221, main_~y~0=v_main_~y~0_833} OutVars{main_~x~0=v_main_~x~0_221, main_~y~0=v_main_~y~0_833} AuxVars[] AssignedVars[] [2021-05-02 23:26:46,310 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:46,328 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:46,331 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:46,344 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:46,383 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_225 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_225} OutVars{main_~x~0=v_main_~x~0_225} AuxVars[] AssignedVars[] [2021-05-02 23:26:46,385 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:46,399 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:46,427 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:46,453 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:46,485 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:46,487 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:46,496 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:46,503 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:46,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:47,267 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:47,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424758446] [2021-05-02 23:26:47,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [424758446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:47,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:47,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-02 23:26:47,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102269221] [2021-05-02 23:26:47,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 23:26:47,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:47,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 23:26:47,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 23:26:47,269 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 32 states have internal predecessors, (39), 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) [2021-05-02 23:26:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:48,320 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2021-05-02 23:26:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 23:26:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 32 states have internal predecessors, (39), 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 43 [2021-05-02 23:26:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:48,321 INFO L225 Difference]: With dead ends: 53 [2021-05-02 23:26:48,321 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 23:26:48,323 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 1366.1ms TimeCoverageRelationStatistics Valid=318, Invalid=3714, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 23:26:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 23:26:48,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-05-02 23:26:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 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) [2021-05-02 23:26:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-05-02 23:26:48,331 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 43 [2021-05-02 23:26:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:48,331 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-05-02 23:26:48,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 32 states have internal predecessors, (39), 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) [2021-05-02 23:26:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-05-02 23:26:48,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-02 23:26:48,331 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:48,332 INFO L523 BasicCegarLoop]: trace histogram [24, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:48,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-02 23:26:48,332 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:48,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:48,332 INFO L82 PathProgramCache]: Analyzing trace with hash -178111421, now seen corresponding path program 26 times [2021-05-02 23:26:48,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:48,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951691154] [2021-05-02 23:26:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:48,361 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_884 4294967296) 10) InVars {main_~y~0=v_main_~y~0_884} OutVars{main_~y~0=v_main_~y~0_884} AuxVars[] AssignedVars[] [2021-05-02 23:26:48,363 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:48,364 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:48,380 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:48,406 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:48,437 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_234 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_886 4294967296))) InVars {main_~x~0=v_main_~x~0_234, main_~y~0=v_main_~y~0_886} OutVars{main_~x~0=v_main_~x~0_234, main_~y~0=v_main_~y~0_886} AuxVars[] AssignedVars[] [2021-05-02 23:26:48,449 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:48,486 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:48,491 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:48,515 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:48,547 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_238 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_238} OutVars{main_~x~0=v_main_~x~0_238} AuxVars[] AssignedVars[] [2021-05-02 23:26:48,549 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:48,564 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:48,581 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:48,600 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:48,627 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:48,628 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:48,636 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:48,643 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:49,425 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:49,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951691154] [2021-05-02 23:26:49,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [951691154] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:49,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:49,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-02 23:26:49,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156816773] [2021-05-02 23:26:49,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 23:26:49,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:49,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 23:26:49,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 23:26:49,428 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 33 states have internal predecessors, (40), 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) [2021-05-02 23:26:50,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:50,597 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-05-02 23:26:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 23:26:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 33 states have internal predecessors, (40), 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 44 [2021-05-02 23:26:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:50,599 INFO L225 Difference]: With dead ends: 54 [2021-05-02 23:26:50,599 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 23:26:50,601 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 1471.2ms TimeCoverageRelationStatistics Valid=324, Invalid=3966, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 23:26:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 23:26:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-02 23:26:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 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) [2021-05-02 23:26:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-05-02 23:26:50,610 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 44 [2021-05-02 23:26:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:50,610 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-05-02 23:26:50,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 33 states have internal predecessors, (40), 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) [2021-05-02 23:26:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-05-02 23:26:50,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 23:26:50,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:50,611 INFO L523 BasicCegarLoop]: trace histogram [25, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:50,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-02 23:26:50,612 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1625713594, now seen corresponding path program 27 times [2021-05-02 23:26:50,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:50,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293538446] [2021-05-02 23:26:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:50,638 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_939 4294967296) 10) InVars {main_~y~0=v_main_~y~0_939} OutVars{main_~y~0=v_main_~y~0_939} AuxVars[] AssignedVars[] [2021-05-02 23:26:50,639 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:50,640 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:50,654 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:50,677 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:50,698 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_941 4294967296)) (< (mod (+ v_main_~x~0_247 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_247, main_~y~0=v_main_~y~0_941} OutVars{main_~x~0=v_main_~x~0_247, main_~y~0=v_main_~y~0_941} AuxVars[] AssignedVars[] [2021-05-02 23:26:50,700 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:50,715 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:50,718 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:50,730 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:50,759 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_251 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_251} OutVars{main_~x~0=v_main_~x~0_251} AuxVars[] AssignedVars[] [2021-05-02 23:26:50,761 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:50,774 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:50,792 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:50,824 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:50,848 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:50,849 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:50,858 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:50,865 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:50,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:51,602 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:51,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293538446] [2021-05-02 23:26:51,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1293538446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:51,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:51,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-02 23:26:51,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060123871] [2021-05-02 23:26:51,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 23:26:51,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:51,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 23:26:51,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1334, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 23:26:51,604 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 34 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) [2021-05-02 23:26:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:52,771 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2021-05-02 23:26:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 23:26:52,771 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 34 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 [2021-05-02 23:26:52,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:52,772 INFO L225 Difference]: With dead ends: 55 [2021-05-02 23:26:52,772 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 23:26:52,773 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 1464.8ms TimeCoverageRelationStatistics Valid=330, Invalid=4226, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 23:26:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 23:26:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-02 23:26:52,782 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) [2021-05-02 23:26:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-05-02 23:26:52,782 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 45 [2021-05-02 23:26:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:52,782 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-05-02 23:26:52,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 34 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) [2021-05-02 23:26:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-05-02 23:26:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-02 23:26:52,783 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:52,783 INFO L523 BasicCegarLoop]: trace histogram [26, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:52,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-02 23:26:52,783 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:52,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1709714211, now seen corresponding path program 28 times [2021-05-02 23:26:52,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:52,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245208531] [2021-05-02 23:26:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:52,807 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_996 4294967296) 10) InVars {main_~y~0=v_main_~y~0_996} OutVars{main_~y~0=v_main_~y~0_996} AuxVars[] AssignedVars[] [2021-05-02 23:26:52,809 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:52,810 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:52,827 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:52,845 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:52,866 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_260 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_998 4294967296))) InVars {main_~x~0=v_main_~x~0_260, main_~y~0=v_main_~y~0_998} OutVars{main_~x~0=v_main_~x~0_260, main_~y~0=v_main_~y~0_998} AuxVars[] AssignedVars[] [2021-05-02 23:26:52,868 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:52,869 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:52,872 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:52,897 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:52,927 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_264 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_264} OutVars{main_~x~0=v_main_~x~0_264} AuxVars[] AssignedVars[] [2021-05-02 23:26:52,929 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:52,942 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:52,961 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:52,978 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:53,004 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:53,005 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:53,013 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:53,019 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:53,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:53,874 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:53,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245208531] [2021-05-02 23:26:53,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1245208531] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:53,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:53,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-05-02 23:26:53,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124515750] [2021-05-02 23:26:53,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 23:26:53,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:53,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 23:26:53,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1351, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 23:26:53,877 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 35 states have internal predecessors, (42), 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) [2021-05-02 23:26:55,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:55,364 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-05-02 23:26:55,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 23:26:55,365 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 35 states have internal predecessors, (42), 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 46 [2021-05-02 23:26:55,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:55,366 INFO L225 Difference]: With dead ends: 56 [2021-05-02 23:26:55,366 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 23:26:55,367 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 1697.8ms TimeCoverageRelationStatistics Valid=303, Invalid=4389, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 23:26:55,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 23:26:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 23:26:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 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) [2021-05-02 23:26:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-05-02 23:26:55,375 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2021-05-02 23:26:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:55,376 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-05-02 23:26:55,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 35 states have internal predecessors, (42), 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) [2021-05-02 23:26:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-05-02 23:26:55,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 23:26:55,376 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:55,376 INFO L523 BasicCegarLoop]: trace histogram [27, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:55,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-02 23:26:55,376 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:55,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:55,377 INFO L82 PathProgramCache]: Analyzing trace with hash 18766042, now seen corresponding path program 29 times [2021-05-02 23:26:55,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:55,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385892465] [2021-05-02 23:26:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:55,408 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1055 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1055} OutVars{main_~y~0=v_main_~y~0_1055} AuxVars[] AssignedVars[] [2021-05-02 23:26:55,409 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:55,416 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:55,428 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:55,447 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:55,470 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_1057 4294967296)) (< (mod (+ v_main_~x~0_273 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_273, main_~y~0=v_main_~y~0_1057} OutVars{main_~x~0=v_main_~x~0_273, main_~y~0=v_main_~y~0_1057} AuxVars[] AssignedVars[] [2021-05-02 23:26:55,472 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:55,489 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:55,493 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:55,506 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:55,550 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_277 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_277} OutVars{main_~x~0=v_main_~x~0_277} AuxVars[] AssignedVars[] [2021-05-02 23:26:55,553 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:55,554 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:55,572 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:55,607 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:55,633 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:55,634 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:55,643 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:55,650 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:55,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:56,462 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:56,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385892465] [2021-05-02 23:26:56,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1385892465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:56,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:56,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-02 23:26:56,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971843339] [2021-05-02 23:26:56,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 23:26:56,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:56,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 23:26:56,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 23:26:56,465 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 36 states have internal predecessors, (43), 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) [2021-05-02 23:26:57,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:57,821 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2021-05-02 23:26:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 23:26:57,827 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 36 states have internal predecessors, (43), 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 47 [2021-05-02 23:26:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:57,828 INFO L225 Difference]: With dead ends: 57 [2021-05-02 23:26:57,828 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 23:26:57,829 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1571.1ms TimeCoverageRelationStatistics Valid=342, Invalid=4770, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 23:26:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 23:26:57,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-05-02 23:26:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 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) [2021-05-02 23:26:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-05-02 23:26:57,838 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 47 [2021-05-02 23:26:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:57,838 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-05-02 23:26:57,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 36 states have internal predecessors, (43), 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) [2021-05-02 23:26:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-05-02 23:26:57,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-02 23:26:57,838 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:57,839 INFO L523 BasicCegarLoop]: trace histogram [28, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:57,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-02 23:26:57,839 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:57,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:57,839 INFO L82 PathProgramCache]: Analyzing trace with hash -861019645, now seen corresponding path program 30 times [2021-05-02 23:26:57,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:57,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290984156] [2021-05-02 23:26:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:57,863 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1116 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1116} OutVars{main_~y~0=v_main_~y~0_1116} AuxVars[] AssignedVars[] [2021-05-02 23:26:57,865 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:26:57,866 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:57,885 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:57,909 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:26:57,937 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_1118 4294967296)) (< (mod (+ v_main_~x~0_286 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_286, main_~y~0=v_main_~y~0_1118} OutVars{main_~x~0=v_main_~x~0_286, main_~y~0=v_main_~y~0_1118} AuxVars[] AssignedVars[] [2021-05-02 23:26:57,944 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:26:57,960 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:57,967 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:26:57,985 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:26:58,013 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_290 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_290} OutVars{main_~x~0=v_main_~x~0_290} AuxVars[] AssignedVars[] [2021-05-02 23:26:58,016 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:26:58,030 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:58,045 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:58,058 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:26:58,082 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:26:58,083 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:26:58,090 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:26:58,097 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:26:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:58,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:26:58,938 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:58,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290984156] [2021-05-02 23:26:58,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [290984156] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:58,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:58,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-05-02 23:26:58,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87510243] [2021-05-02 23:26:58,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 23:26:58,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:58,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 23:26:58,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1493, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 23:26:58,940 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 37 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) [2021-05-02 23:27:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:00,251 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-05-02 23:27:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 23:27:00,252 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 37 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 [2021-05-02 23:27:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:00,252 INFO L225 Difference]: With dead ends: 58 [2021-05-02 23:27:00,252 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 23:27:00,253 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 1553.0ms TimeCoverageRelationStatistics Valid=340, Invalid=4916, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 23:27:00,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 23:27:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-02 23:27:00,261 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) [2021-05-02 23:27:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-05-02 23:27:00,261 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 48 [2021-05-02 23:27:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:00,261 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-05-02 23:27:00,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 37 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) [2021-05-02 23:27:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-05-02 23:27:00,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 23:27:00,262 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:00,262 INFO L523 BasicCegarLoop]: trace histogram [29, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:00,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-02 23:27:00,262 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:00,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1930395130, now seen corresponding path program 31 times [2021-05-02 23:27:00,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:00,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123132279] [2021-05-02 23:27:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:00,285 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1179 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1179} OutVars{main_~y~0=v_main_~y~0_1179} AuxVars[] AssignedVars[] [2021-05-02 23:27:00,286 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:00,292 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:00,305 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:00,315 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:00,335 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_299 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1181 4294967296))) InVars {main_~x~0=v_main_~x~0_299, main_~y~0=v_main_~y~0_1181} OutVars{main_~x~0=v_main_~x~0_299, main_~y~0=v_main_~y~0_1181} AuxVars[] AssignedVars[] [2021-05-02 23:27:00,337 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:00,337 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:00,341 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:00,360 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:00,387 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_303 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_303} OutVars{main_~x~0=v_main_~x~0_303} AuxVars[] AssignedVars[] [2021-05-02 23:27:00,388 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:00,401 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:00,417 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:00,434 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:00,456 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:00,457 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:00,464 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:00,470 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:00,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:01,258 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:01,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123132279] [2021-05-02 23:27:01,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [123132279] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:01,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:01,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-02 23:27:01,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269596065] [2021-05-02 23:27:01,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 23:27:01,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:01,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 23:27:01,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1582, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 23:27:01,260 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 40 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 38 states have internal predecessors, (45), 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) [2021-05-02 23:27:02,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:02,783 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2021-05-02 23:27:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 23:27:02,783 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 38 states have internal predecessors, (45), 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 49 [2021-05-02 23:27:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:02,784 INFO L225 Difference]: With dead ends: 61 [2021-05-02 23:27:02,784 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 23:27:02,785 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1708.7ms TimeCoverageRelationStatistics Valid=327, Invalid=5223, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 23:27:02,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 23:27:02,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-05-02 23:27:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 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) [2021-05-02 23:27:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-05-02 23:27:02,793 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 49 [2021-05-02 23:27:02,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:02,794 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-05-02 23:27:02,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 38 states have internal predecessors, (45), 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) [2021-05-02 23:27:02,794 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-05-02 23:27:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 23:27:02,794 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:02,794 INFO L523 BasicCegarLoop]: trace histogram [30, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:02,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-02 23:27:02,794 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:02,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1730060061, now seen corresponding path program 32 times [2021-05-02 23:27:02,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:02,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403664913] [2021-05-02 23:27:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:02,815 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1244 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1244} OutVars{main_~y~0=v_main_~y~0_1244} AuxVars[] AssignedVars[] [2021-05-02 23:27:02,816 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:02,826 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:02,846 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:02,858 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:02,878 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_312 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1246 4294967296))) InVars {main_~x~0=v_main_~x~0_312, main_~y~0=v_main_~y~0_1246} OutVars{main_~x~0=v_main_~x~0_312, main_~y~0=v_main_~y~0_1246} AuxVars[] AssignedVars[] [2021-05-02 23:27:02,880 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:02,880 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:02,883 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:02,906 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:02,933 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_316 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_316} OutVars{main_~x~0=v_main_~x~0_316} AuxVars[] AssignedVars[] [2021-05-02 23:27:02,934 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:02,935 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:02,950 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:02,975 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:02,998 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:27:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:03,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:03,953 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:03,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403664913] [2021-05-02 23:27:03,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1403664913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:03,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:03,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-05-02 23:27:03,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937847156] [2021-05-02 23:27:03,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 23:27:03,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:03,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 23:27:03,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1663, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 23:27:03,955 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 39 states have internal predecessors, (46), 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) [2021-05-02 23:27:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:05,580 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-05-02 23:27:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 23:27:05,581 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.15) internal successors, (46), 39 states have internal predecessors, (46), 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 50 [2021-05-02 23:27:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:05,581 INFO L225 Difference]: With dead ends: 59 [2021-05-02 23:27:05,581 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 23:27:05,582 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 1960.0ms TimeCoverageRelationStatistics Valid=335, Invalid=5517, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 23:27:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 23:27:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-05-02 23:27:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 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) [2021-05-02 23:27:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2021-05-02 23:27:05,591 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 50 [2021-05-02 23:27:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:05,591 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2021-05-02 23:27:05,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 40 states have (on average 1.15) internal successors, (46), 39 states have internal predecessors, (46), 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) [2021-05-02 23:27:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2021-05-02 23:27:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 23:27:05,592 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:05,592 INFO L523 BasicCegarLoop]: trace histogram [30, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:05,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-02 23:27:05,592 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash 192525865, now seen corresponding path program 33 times [2021-05-02 23:27:05,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:05,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398097869] [2021-05-02 23:27:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:05,616 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1298 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1298} OutVars{main_~y~0=v_main_~y~0_1298} AuxVars[] AssignedVars[] [2021-05-02 23:27:05,617 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:05,624 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:05,635 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:05,646 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:05,666 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_1300 4294967296)) (< (mod (+ v_main_~x~0_322 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_322, main_~y~0=v_main_~y~0_1300} OutVars{main_~x~0=v_main_~x~0_322, main_~y~0=v_main_~y~0_1300} AuxVars[] AssignedVars[] [2021-05-02 23:27:05,670 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:05,682 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:05,685 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:05,694 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:05,717 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_326 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_326} OutVars{main_~x~0=v_main_~x~0_326} AuxVars[] AssignedVars[] [2021-05-02 23:27:05,719 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:05,720 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:05,734 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:05,757 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:05,779 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:05,780 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:05,785 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:27:05,789 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:05,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:06,676 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:06,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398097869] [2021-05-02 23:27:06,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1398097869] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:06,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:06,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-02 23:27:06,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827534009] [2021-05-02 23:27:06,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 23:27:06,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:06,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 23:27:06,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 23:27:06,678 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 40 states have internal predecessors, (49), 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) [2021-05-02 23:27:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:08,101 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2021-05-02 23:27:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 23:27:08,101 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 40 states have internal predecessors, (49), 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 53 [2021-05-02 23:27:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:08,102 INFO L225 Difference]: With dead ends: 65 [2021-05-02 23:27:08,102 INFO L226 Difference]: Without dead ends: 57 [2021-05-02 23:27:08,103 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 1788.1ms TimeCoverageRelationStatistics Valid=392, Invalid=6088, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 23:27:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-02 23:27:08,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2021-05-02 23:27:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 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) [2021-05-02 23:27:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2021-05-02 23:27:08,118 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 53 [2021-05-02 23:27:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:08,118 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2021-05-02 23:27:08,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 40 states have internal predecessors, (49), 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) [2021-05-02 23:27:08,118 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2021-05-02 23:27:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 23:27:08,118 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:08,118 INFO L523 BasicCegarLoop]: trace histogram [31, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:08,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-02 23:27:08,119 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:08,119 INFO L82 PathProgramCache]: Analyzing trace with hash 230567572, now seen corresponding path program 34 times [2021-05-02 23:27:08,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:08,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860033923] [2021-05-02 23:27:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:08,141 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1356 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1356} OutVars{main_~y~0=v_main_~y~0_1356} AuxVars[] AssignedVars[] [2021-05-02 23:27:08,143 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:08,151 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:08,162 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:08,174 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:08,195 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_336 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1358 4294967296))) InVars {main_~x~0=v_main_~x~0_336, main_~y~0=v_main_~y~0_1358} OutVars{main_~x~0=v_main_~x~0_336, main_~y~0=v_main_~y~0_1358} AuxVars[] AssignedVars[] [2021-05-02 23:27:08,196 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:08,197 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:08,199 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:08,222 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:08,246 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_340 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_340} OutVars{main_~x~0=v_main_~x~0_340} AuxVars[] AssignedVars[] [2021-05-02 23:27:08,248 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:08,248 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:08,269 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:08,294 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:08,314 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:08,315 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:08,322 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:08,328 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:09,277 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:09,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860033923] [2021-05-02 23:27:09,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1860033923] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:09,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:09,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-05-02 23:27:09,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660592627] [2021-05-02 23:27:09,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 23:27:09,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:09,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 23:27:09,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1831, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 23:27:09,279 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 41 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) [2021-05-02 23:27:11,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:11,141 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2021-05-02 23:27:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 23:27:11,142 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 41 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 [2021-05-02 23:27:11,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:11,143 INFO L225 Difference]: With dead ends: 64 [2021-05-02 23:27:11,143 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 23:27:11,143 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 2102.4ms TimeCoverageRelationStatistics Valid=351, Invalid=6129, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 23:27:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 23:27:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 23:27:11,157 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) [2021-05-02 23:27:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-05-02 23:27:11,157 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2021-05-02 23:27:11,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:11,158 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-05-02 23:27:11,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 41 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) [2021-05-02 23:27:11,158 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-05-02 23:27:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 23:27:11,158 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:11,158 INFO L523 BasicCegarLoop]: trace histogram [32, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:11,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-02 23:27:11,158 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:11,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1409860489, now seen corresponding path program 35 times [2021-05-02 23:27:11,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:11,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956932948] [2021-05-02 23:27:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:11,182 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1416 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1416} OutVars{main_~y~0=v_main_~y~0_1416} AuxVars[] AssignedVars[] [2021-05-02 23:27:11,184 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:11,191 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:11,206 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:11,224 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:11,245 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_1418 4294967296)) (< (mod (+ v_main_~x~0_350 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_350, main_~y~0=v_main_~y~0_1418} OutVars{main_~x~0=v_main_~x~0_350, main_~y~0=v_main_~y~0_1418} AuxVars[] AssignedVars[] [2021-05-02 23:27:11,247 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:11,261 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:11,263 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:11,273 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:11,301 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_354 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_354} OutVars{main_~x~0=v_main_~x~0_354} AuxVars[] AssignedVars[] [2021-05-02 23:27:11,303 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:11,303 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:11,319 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:11,349 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:11,374 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:11,375 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:11,383 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:11,389 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:11,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:12,399 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:12,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956932948] [2021-05-02 23:27:12,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1956932948] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:12,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:12,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-02 23:27:12,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664476783] [2021-05-02 23:27:12,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 23:27:12,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:12,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 23:27:12,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1990, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 23:27:12,401 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 42 states have internal predecessors, (51), 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) [2021-05-02 23:27:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:14,181 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-05-02 23:27:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 23:27:14,182 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 42 states have internal predecessors, (51), 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 55 [2021-05-02 23:27:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:14,183 INFO L225 Difference]: With dead ends: 67 [2021-05-02 23:27:14,183 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 23:27:14,184 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2032 ImplicationChecksByTransitivity, 2119.9ms TimeCoverageRelationStatistics Valid=414, Invalid=6726, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 23:27:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 23:27:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-05-02 23:27:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 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) [2021-05-02 23:27:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-05-02 23:27:14,193 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 55 [2021-05-02 23:27:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:14,193 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-05-02 23:27:14,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 42 states have internal predecessors, (51), 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) [2021-05-02 23:27:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-05-02 23:27:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-02 23:27:14,194 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:14,194 INFO L523 BasicCegarLoop]: trace histogram [33, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:14,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-02 23:27:14,194 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:14,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:14,194 INFO L82 PathProgramCache]: Analyzing trace with hash -686764748, now seen corresponding path program 36 times [2021-05-02 23:27:14,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:14,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696840084] [2021-05-02 23:27:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:14,218 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1478 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1478} OutVars{main_~y~0=v_main_~y~0_1478} AuxVars[] AssignedVars[] [2021-05-02 23:27:14,219 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:14,226 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:14,245 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:14,257 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:14,277 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_1480 4294967296)) (< (mod (+ v_main_~x~0_364 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_364, main_~y~0=v_main_~y~0_1480} OutVars{main_~x~0=v_main_~x~0_364, main_~y~0=v_main_~y~0_1480} AuxVars[] AssignedVars[] [2021-05-02 23:27:14,278 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:14,279 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:14,282 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:14,304 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:14,337 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_368 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_368} OutVars{main_~x~0=v_main_~x~0_368} AuxVars[] AssignedVars[] [2021-05-02 23:27:14,338 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:14,339 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:14,353 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:14,380 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:14,408 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:14,409 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:14,417 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:14,423 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:14,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:15,521 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:15,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696840084] [2021-05-02 23:27:15,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1696840084] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:15,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:15,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-05-02 23:27:15,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110584876] [2021-05-02 23:27:15,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 23:27:15,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:15,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 23:27:15,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 23:27:15,523 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 45 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 43 states have internal predecessors, (52), 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) [2021-05-02 23:27:17,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:17,336 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-05-02 23:27:17,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 23:27:17,336 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 43 states have internal predecessors, (52), 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 56 [2021-05-02 23:27:17,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:17,337 INFO L225 Difference]: With dead ends: 68 [2021-05-02 23:27:17,337 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 23:27:17,338 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2107 ImplicationChecksByTransitivity, 2217.3ms TimeCoverageRelationStatistics Valid=501, Invalid=6981, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 23:27:17,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 23:27:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-05-02 23:27:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 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) [2021-05-02 23:27:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-05-02 23:27:17,347 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 56 [2021-05-02 23:27:17,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:17,348 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-05-02 23:27:17,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 43 states have internal predecessors, (52), 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) [2021-05-02 23:27:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-05-02 23:27:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 23:27:17,348 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:17,348 INFO L523 BasicCegarLoop]: trace histogram [34, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:17,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-02 23:27:17,348 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:17,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:17,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1257637655, now seen corresponding path program 37 times [2021-05-02 23:27:17,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:17,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324606746] [2021-05-02 23:27:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:17,369 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1542 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1542} OutVars{main_~y~0=v_main_~y~0_1542} AuxVars[] AssignedVars[] [2021-05-02 23:27:17,371 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:17,372 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:17,383 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:17,402 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:17,430 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_378 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1544 4294967296))) InVars {main_~x~0=v_main_~x~0_378, main_~y~0=v_main_~y~0_1544} OutVars{main_~x~0=v_main_~x~0_378, main_~y~0=v_main_~y~0_1544} AuxVars[] AssignedVars[] [2021-05-02 23:27:17,433 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:17,433 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:17,436 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:17,460 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:17,491 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_382 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_382} OutVars{main_~x~0=v_main_~x~0_382} AuxVars[] AssignedVars[] [2021-05-02 23:27:17,493 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:17,493 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:17,509 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:17,539 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:17,567 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:17,568 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:17,575 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:17,582 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:18,783 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:18,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324606746] [2021-05-02 23:27:18,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [324606746] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:18,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:18,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-02 23:27:18,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957966359] [2021-05-02 23:27:18,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 23:27:18,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:18,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 23:27:18,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2172, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 23:27:18,785 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 44 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) [2021-05-02 23:27:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:20,861 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-05-02 23:27:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 23:27:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 44 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 [2021-05-02 23:27:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:20,862 INFO L225 Difference]: With dead ends: 69 [2021-05-02 23:27:20,862 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 23:27:20,863 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2207 ImplicationChecksByTransitivity, 2483.9ms TimeCoverageRelationStatistics Valid=436, Invalid=7396, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 23:27:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 23:27:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-05-02 23:27:20,874 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) [2021-05-02 23:27:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-05-02 23:27:20,874 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 57 [2021-05-02 23:27:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:20,874 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-05-02 23:27:20,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 44 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) [2021-05-02 23:27:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-05-02 23:27:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-02 23:27:20,875 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:20,875 INFO L523 BasicCegarLoop]: trace histogram [35, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:20,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-02 23:27:20,875 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:20,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:20,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1774828588, now seen corresponding path program 38 times [2021-05-02 23:27:20,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:20,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88405251] [2021-05-02 23:27:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:20,913 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1608 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1608} OutVars{main_~y~0=v_main_~y~0_1608} AuxVars[] AssignedVars[] [2021-05-02 23:27:20,915 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:20,925 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:20,941 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:20,961 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:20,983 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_392 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1610 4294967296))) InVars {main_~x~0=v_main_~x~0_392, main_~y~0=v_main_~y~0_1610} OutVars{main_~x~0=v_main_~x~0_392, main_~y~0=v_main_~y~0_1610} AuxVars[] AssignedVars[] [2021-05-02 23:27:20,986 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:21,002 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:21,006 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:21,018 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:21,049 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_396 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_396} OutVars{main_~x~0=v_main_~x~0_396} AuxVars[] AssignedVars[] [2021-05-02 23:27:21,051 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:21,052 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:21,072 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:21,105 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:21,130 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:21,131 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:21,140 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:21,146 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:21,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:22,299 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:22,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88405251] [2021-05-02 23:27:22,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [88405251] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:22,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:22,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2021-05-02 23:27:22,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143349838] [2021-05-02 23:27:22,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 23:27:22,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:22,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 23:27:22,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2191, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 23:27:22,301 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 45 states have internal predecessors, (54), 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) [2021-05-02 23:27:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:24,500 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2021-05-02 23:27:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 23:27:24,501 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 45 states have internal predecessors, (54), 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 58 [2021-05-02 23:27:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:24,502 INFO L225 Difference]: With dead ends: 68 [2021-05-02 23:27:24,502 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 23:27:24,503 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 2485.3ms TimeCoverageRelationStatistics Valid=383, Invalid=7449, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 23:27:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 23:27:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 23:27:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 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) [2021-05-02 23:27:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-05-02 23:27:24,514 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2021-05-02 23:27:24,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:24,514 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-05-02 23:27:24,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 45 states have internal predecessors, (54), 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) [2021-05-02 23:27:24,514 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-05-02 23:27:24,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 23:27:24,515 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:24,515 INFO L523 BasicCegarLoop]: trace histogram [36, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:24,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-02 23:27:24,515 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:24,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:24,515 INFO L82 PathProgramCache]: Analyzing trace with hash -627878327, now seen corresponding path program 39 times [2021-05-02 23:27:24,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:24,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145194681] [2021-05-02 23:27:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:24,540 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1676 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1676} OutVars{main_~y~0=v_main_~y~0_1676} AuxVars[] AssignedVars[] [2021-05-02 23:27:24,542 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:24,543 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:24,561 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:24,586 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:24,614 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_406 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1678 4294967296))) InVars {main_~x~0=v_main_~x~0_406, main_~y~0=v_main_~y~0_1678} OutVars{main_~x~0=v_main_~x~0_406, main_~y~0=v_main_~y~0_1678} AuxVars[] AssignedVars[] [2021-05-02 23:27:24,615 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:24,634 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:24,637 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:24,650 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:24,688 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_410 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_410} OutVars{main_~x~0=v_main_~x~0_410} AuxVars[] AssignedVars[] [2021-05-02 23:27:24,690 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:24,707 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:24,745 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:24,766 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:24,794 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:24,795 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:24,804 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:24,810 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:26,027 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:26,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145194681] [2021-05-02 23:27:26,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2145194681] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:26,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:26,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-02 23:27:26,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908080784] [2021-05-02 23:27:26,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 23:27:26,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:26,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 23:27:26,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2362, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 23:27:26,029 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 46 states have internal predecessors, (55), 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) [2021-05-02 23:27:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:28,011 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-05-02 23:27:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 23:27:28,012 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 46 states have internal predecessors, (55), 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 59 [2021-05-02 23:27:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:28,013 INFO L225 Difference]: With dead ends: 71 [2021-05-02 23:27:28,013 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 23:27:28,014 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2413 ImplicationChecksByTransitivity, 2406.2ms TimeCoverageRelationStatistics Valid=458, Invalid=8098, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 23:27:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 23:27:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2021-05-02 23:27:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 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) [2021-05-02 23:27:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-05-02 23:27:28,028 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 59 [2021-05-02 23:27:28,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:28,028 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-05-02 23:27:28,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 46 states have internal predecessors, (55), 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) [2021-05-02 23:27:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-05-02 23:27:28,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-02 23:27:28,028 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:28,029 INFO L523 BasicCegarLoop]: trace histogram [37, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:28,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-02 23:27:28,029 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:28,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:28,029 INFO L82 PathProgramCache]: Analyzing trace with hash 567841396, now seen corresponding path program 40 times [2021-05-02 23:27:28,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:28,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354541426] [2021-05-02 23:27:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:28,055 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1746 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1746} OutVars{main_~y~0=v_main_~y~0_1746} AuxVars[] AssignedVars[] [2021-05-02 23:27:28,056 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:28,066 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:28,085 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:28,101 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:28,123 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_420 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1748 4294967296))) InVars {main_~x~0=v_main_~x~0_420, main_~y~0=v_main_~y~0_1748} OutVars{main_~x~0=v_main_~x~0_420, main_~y~0=v_main_~y~0_1748} AuxVars[] AssignedVars[] [2021-05-02 23:27:28,125 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:28,126 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:28,129 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:28,154 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:28,185 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_424 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_424} OutVars{main_~x~0=v_main_~x~0_424} AuxVars[] AssignedVars[] [2021-05-02 23:27:28,186 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:28,201 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:28,216 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:28,238 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:28,263 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:28,264 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:28,273 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:28,279 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:28,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:29,584 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:29,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354541426] [2021-05-02 23:27:29,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [354541426] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:29,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:29,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2021-05-02 23:27:29,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862799457] [2021-05-02 23:27:29,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 23:27:29,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:29,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 23:27:29,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2383, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 23:27:29,587 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 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) [2021-05-02 23:27:31,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:31,976 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2021-05-02 23:27:31,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 23:27:31,977 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 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 [2021-05-02 23:27:31,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:31,978 INFO L225 Difference]: With dead ends: 70 [2021-05-02 23:27:31,978 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 23:27:31,978 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 2704.6ms TimeCoverageRelationStatistics Valid=399, Invalid=8157, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 23:27:31,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 23:27:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-05-02 23:27:31,989 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) [2021-05-02 23:27:31,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2021-05-02 23:27:31,989 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 60 [2021-05-02 23:27:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:31,990 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2021-05-02 23:27:31,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 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) [2021-05-02 23:27:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2021-05-02 23:27:31,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 23:27:31,990 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:31,990 INFO L523 BasicCegarLoop]: trace histogram [38, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:31,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-02 23:27:31,990 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:31,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1019552855, now seen corresponding path program 41 times [2021-05-02 23:27:31,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:31,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902596651] [2021-05-02 23:27:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:32,022 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1818 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1818} OutVars{main_~y~0=v_main_~y~0_1818} AuxVars[] AssignedVars[] [2021-05-02 23:27:32,023 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:32,023 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:32,042 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:32,064 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:32,083 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_434 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1820 4294967296))) InVars {main_~x~0=v_main_~x~0_434, main_~y~0=v_main_~y~0_1820} OutVars{main_~x~0=v_main_~x~0_434, main_~y~0=v_main_~y~0_1820} AuxVars[] AssignedVars[] [2021-05-02 23:27:32,084 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:32,096 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:32,098 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:32,107 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:32,134 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_438 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_438} OutVars{main_~x~0=v_main_~x~0_438} AuxVars[] AssignedVars[] [2021-05-02 23:27:32,136 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:32,137 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:32,153 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:32,180 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:32,202 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:32,203 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:32,210 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:32,216 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:32,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:33,420 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:33,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902596651] [2021-05-02 23:27:33,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1902596651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:33,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:33,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-02 23:27:33,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274436684] [2021-05-02 23:27:33,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 23:27:33,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:33,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 23:27:33,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2462, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 23:27:33,423 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 states have internal predecessors, (57), 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) [2021-05-02 23:27:35,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:35,328 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-05-02 23:27:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 23:27:35,329 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 states have internal predecessors, (57), 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 61 [2021-05-02 23:27:35,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:35,329 INFO L225 Difference]: With dead ends: 73 [2021-05-02 23:27:35,329 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 23:27:35,330 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 5 SyntacticMatches, 7 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2467 ImplicationChecksByTransitivity, 2441.8ms TimeCoverageRelationStatistics Valid=473, Invalid=8647, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 23:27:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 23:27:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-05-02 23:27:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 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) [2021-05-02 23:27:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-05-02 23:27:35,341 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 61 [2021-05-02 23:27:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:35,342 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-05-02 23:27:35,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 states have internal predecessors, (57), 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) [2021-05-02 23:27:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-05-02 23:27:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-05-02 23:27:35,342 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:35,342 INFO L523 BasicCegarLoop]: trace histogram [39, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:35,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-02 23:27:35,342 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:35,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1310832916, now seen corresponding path program 42 times [2021-05-02 23:27:35,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:35,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664461107] [2021-05-02 23:27:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:35,363 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1892 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1892} OutVars{main_~y~0=v_main_~y~0_1892} AuxVars[] AssignedVars[] [2021-05-02 23:27:35,365 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:35,371 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:35,383 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:35,394 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:35,413 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_448 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1894 4294967296))) InVars {main_~x~0=v_main_~x~0_448, main_~y~0=v_main_~y~0_1894} OutVars{main_~x~0=v_main_~x~0_448, main_~y~0=v_main_~y~0_1894} AuxVars[] AssignedVars[] [2021-05-02 23:27:35,414 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:35,415 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:35,417 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:35,437 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:35,469 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_452 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_452} OutVars{main_~x~0=v_main_~x~0_452} AuxVars[] AssignedVars[] [2021-05-02 23:27:35,470 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:35,481 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:35,492 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:35,507 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:35,528 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:35,528 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:35,535 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:35,541 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:35,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:36,774 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:36,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664461107] [2021-05-02 23:27:36,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1664461107] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:36,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:36,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-05-02 23:27:36,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778812947] [2021-05-02 23:27:36,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 23:27:36,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:36,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 23:27:36,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2662, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 23:27:36,776 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 51 states, 50 states have (on average 1.16) internal successors, (58), 49 states have internal predecessors, (58), 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) [2021-05-02 23:27:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:38,882 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-05-02 23:27:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 23:27:38,882 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.16) internal successors, (58), 49 states have internal predecessors, (58), 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 62 [2021-05-02 23:27:38,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:38,883 INFO L225 Difference]: With dead ends: 74 [2021-05-02 23:27:38,883 INFO L226 Difference]: Without dead ends: 66 [2021-05-02 23:27:38,884 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2633 ImplicationChecksByTransitivity, 2470.2ms TimeCoverageRelationStatistics Valid=464, Invalid=9042, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 23:27:38,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-02 23:27:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-05-02 23:27:38,895 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) [2021-05-02 23:27:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-05-02 23:27:38,896 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2021-05-02 23:27:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:38,896 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-05-02 23:27:38,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 50 states have (on average 1.16) internal successors, (58), 49 states have internal predecessors, (58), 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) [2021-05-02 23:27:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-05-02 23:27:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 23:27:38,897 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:38,897 INFO L523 BasicCegarLoop]: trace histogram [40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:38,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-02 23:27:38,897 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:38,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:38,897 INFO L82 PathProgramCache]: Analyzing trace with hash 538347785, now seen corresponding path program 43 times [2021-05-02 23:27:38,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:38,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454308696] [2021-05-02 23:27:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:38,919 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_1968 4294967296) 10) InVars {main_~y~0=v_main_~y~0_1968} OutVars{main_~y~0=v_main_~y~0_1968} AuxVars[] AssignedVars[] [2021-05-02 23:27:38,921 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:38,928 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:38,940 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:38,955 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:38,976 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_462 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_1970 4294967296))) InVars {main_~x~0=v_main_~x~0_462, main_~y~0=v_main_~y~0_1970} OutVars{main_~x~0=v_main_~x~0_462, main_~y~0=v_main_~y~0_1970} AuxVars[] AssignedVars[] [2021-05-02 23:27:38,978 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:38,978 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:38,981 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:39,002 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:39,028 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_466 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_466} OutVars{main_~x~0=v_main_~x~0_466} AuxVars[] AssignedVars[] [2021-05-02 23:27:39,030 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:39,043 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:39,057 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:39,075 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:39,099 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:27:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:40,508 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:40,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454308696] [2021-05-02 23:27:40,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1454308696] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:40,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:40,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-02 23:27:40,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184992687] [2021-05-02 23:27:40,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 23:27:40,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:40,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 23:27:40,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2686, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 23:27:40,511 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 52 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 50 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) [2021-05-02 23:27:43,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:43,002 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-05-02 23:27:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 23:27:43,003 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 50 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 [2021-05-02 23:27:43,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:43,004 INFO L225 Difference]: With dead ends: 72 [2021-05-02 23:27:43,004 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 23:27:43,005 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 2936.5ms TimeCoverageRelationStatistics Valid=423, Invalid=9279, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 23:27:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 23:27:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-05-02 23:27:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 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) [2021-05-02 23:27:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2021-05-02 23:27:43,017 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2021-05-02 23:27:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:43,017 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2021-05-02 23:27:43,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 50 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) [2021-05-02 23:27:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2021-05-02 23:27:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-02 23:27:43,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:43,018 INFO L523 BasicCegarLoop]: trace histogram [40, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:43,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-02 23:27:43,018 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:43,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1315230787, now seen corresponding path program 44 times [2021-05-02 23:27:43,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:43,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324228886] [2021-05-02 23:27:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:43,039 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2033 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2033} OutVars{main_~y~0=v_main_~y~0_2033} AuxVars[] AssignedVars[] [2021-05-02 23:27:43,041 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:43,041 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:43,058 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:43,076 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:43,095 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_2035 4294967296)) (< (mod (+ v_main_~x~0_473 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_473, main_~y~0=v_main_~y~0_2035} OutVars{main_~x~0=v_main_~x~0_473, main_~y~0=v_main_~y~0_2035} AuxVars[] AssignedVars[] [2021-05-02 23:27:43,097 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:43,097 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:43,099 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:43,119 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:43,143 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_477 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_477} OutVars{main_~x~0=v_main_~x~0_477} AuxVars[] AssignedVars[] [2021-05-02 23:27:43,144 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:43,145 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:43,160 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:43,183 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:43,214 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:43,214 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:43,220 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:27:43,224 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:44,532 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:44,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324228886] [2021-05-02 23:27:44,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [324228886] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:44,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:44,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-02 23:27:44,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598629951] [2021-05-02 23:27:44,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 23:27:44,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:44,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 23:27:44,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2876, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 23:27:44,535 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 53 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 51 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) [2021-05-02 23:27:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:46,638 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2021-05-02 23:27:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 23:27:46,638 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 51 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 [2021-05-02 23:27:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:46,639 INFO L225 Difference]: With dead ends: 76 [2021-05-02 23:27:46,639 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 23:27:46,640 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2868 ImplicationChecksByTransitivity, 2642.3ms TimeCoverageRelationStatistics Valid=476, Invalid=9826, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 23:27:46,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 23:27:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-05-02 23:27:46,656 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) [2021-05-02 23:27:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-05-02 23:27:46,657 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2021-05-02 23:27:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:46,657 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-05-02 23:27:46,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 51 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) [2021-05-02 23:27:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-05-02 23:27:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 23:27:46,657 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:46,658 INFO L523 BasicCegarLoop]: trace histogram [41, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:46,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-02 23:27:46,658 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:46,658 INFO L82 PathProgramCache]: Analyzing trace with hash 674681786, now seen corresponding path program 45 times [2021-05-02 23:27:46,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:46,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273499396] [2021-05-02 23:27:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:46,680 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2102 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2102} OutVars{main_~y~0=v_main_~y~0_2102} AuxVars[] AssignedVars[] [2021-05-02 23:27:46,681 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:46,688 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:46,703 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:46,712 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:46,732 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_488 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_2104 4294967296))) InVars {main_~x~0=v_main_~x~0_488, main_~y~0=v_main_~y~0_2104} OutVars{main_~x~0=v_main_~x~0_488, main_~y~0=v_main_~y~0_2104} AuxVars[] AssignedVars[] [2021-05-02 23:27:46,733 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:46,734 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:46,739 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:46,758 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:46,785 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_492 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_492} OutVars{main_~x~0=v_main_~x~0_492} AuxVars[] AssignedVars[] [2021-05-02 23:27:46,786 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:46,798 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:46,812 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:46,832 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:46,855 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:46,855 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:46,863 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:46,868 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:46,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:48,325 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:48,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273499396] [2021-05-02 23:27:48,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [273499396] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:48,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:48,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-02 23:27:48,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46801492] [2021-05-02 23:27:48,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 23:27:48,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:48,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 23:27:48,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2986, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 23:27:48,327 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 52 states have internal predecessors, (63), 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) [2021-05-02 23:27:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:50,799 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2021-05-02 23:27:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 23:27:50,799 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 52 states have internal predecessors, (63), 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 67 [2021-05-02 23:27:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:50,800 INFO L225 Difference]: With dead ends: 77 [2021-05-02 23:27:50,800 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 23:27:50,801 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 6 SyntacticMatches, 7 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 2828.9ms TimeCoverageRelationStatistics Valid=482, Invalid=10230, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 23:27:50,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 23:27:50,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-05-02 23:27:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 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) [2021-05-02 23:27:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-05-02 23:27:50,813 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 67 [2021-05-02 23:27:50,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:50,813 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-05-02 23:27:50,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 52 states have internal predecessors, (63), 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) [2021-05-02 23:27:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-05-02 23:27:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 23:27:50,814 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:50,814 INFO L523 BasicCegarLoop]: trace histogram [42, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:50,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-02 23:27:50,814 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:50,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:50,814 INFO L82 PathProgramCache]: Analyzing trace with hash -2002468061, now seen corresponding path program 46 times [2021-05-02 23:27:50,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:50,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569293032] [2021-05-02 23:27:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:50,835 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2173 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2173} OutVars{main_~y~0=v_main_~y~0_2173} AuxVars[] AssignedVars[] [2021-05-02 23:27:50,836 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:50,846 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:50,858 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:50,869 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:50,888 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_503 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_2175 4294967296))) InVars {main_~x~0=v_main_~x~0_503, main_~y~0=v_main_~y~0_2175} OutVars{main_~x~0=v_main_~x~0_503, main_~y~0=v_main_~y~0_2175} AuxVars[] AssignedVars[] [2021-05-02 23:27:50,889 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:50,901 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:50,904 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:50,915 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:50,944 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_507 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_507} OutVars{main_~x~0=v_main_~x~0_507} AuxVars[] AssignedVars[] [2021-05-02 23:27:50,945 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:50,959 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:50,976 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:50,993 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:51,015 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:51,016 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:51,024 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:51,029 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:51,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:52,443 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:52,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569293032] [2021-05-02 23:27:52,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1569293032] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:52,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:52,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2021-05-02 23:27:52,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102044665] [2021-05-02 23:27:52,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 23:27:52,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:52,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 23:27:52,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3007, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 23:27:52,445 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 53 states have internal predecessors, (64), 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) [2021-05-02 23:27:55,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:55,218 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2021-05-02 23:27:55,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 23:27:55,218 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 53 states have internal predecessors, (64), 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 68 [2021-05-02 23:27:55,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:55,219 INFO L225 Difference]: With dead ends: 78 [2021-05-02 23:27:55,219 INFO L226 Difference]: Without dead ends: 70 [2021-05-02 23:27:55,220 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 7 SyntacticMatches, 7 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 3128.7ms TimeCoverageRelationStatistics Valid=447, Invalid=10473, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 23:27:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-02 23:27:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-05-02 23:27:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 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) [2021-05-02 23:27:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2021-05-02 23:27:55,232 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 68 [2021-05-02 23:27:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:55,232 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2021-05-02 23:27:55,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 53 states have internal predecessors, (64), 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) [2021-05-02 23:27:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2021-05-02 23:27:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 23:27:55,233 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:55,233 INFO L523 BasicCegarLoop]: trace histogram [43, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:55,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-02 23:27:55,233 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:55,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:55,233 INFO L82 PathProgramCache]: Analyzing trace with hash 905232602, now seen corresponding path program 47 times [2021-05-02 23:27:55,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:55,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96744255] [2021-05-02 23:27:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:55,254 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2246 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2246} OutVars{main_~y~0=v_main_~y~0_2246} AuxVars[] AssignedVars[] [2021-05-02 23:27:55,255 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:55,262 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:55,274 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:55,286 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:55,308 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_2248 4294967296)) (< (mod (+ v_main_~x~0_518 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_518, main_~y~0=v_main_~y~0_2248} OutVars{main_~x~0=v_main_~x~0_518, main_~y~0=v_main_~y~0_2248} AuxVars[] AssignedVars[] [2021-05-02 23:27:55,309 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:55,322 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:55,324 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:55,334 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:55,362 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_522 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_522} OutVars{main_~x~0=v_main_~x~0_522} AuxVars[] AssignedVars[] [2021-05-02 23:27:55,363 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:55,374 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:55,400 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:55,413 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:55,438 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:55,439 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:55,446 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:55,452 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:55,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:27:56,868 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:27:56,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96744255] [2021-05-02 23:27:56,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [96744255] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:27:56,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:27:56,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-05-02 23:27:56,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348577262] [2021-05-02 23:27:56,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 23:27:56,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:27:56,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 23:27:56,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=3212, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 23:27:56,870 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 54 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) [2021-05-02 23:27:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:27:59,448 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-05-02 23:27:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 23:27:59,449 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 54 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 [2021-05-02 23:27:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:27:59,449 INFO L225 Difference]: With dead ends: 79 [2021-05-02 23:27:59,449 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 23:27:59,450 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 6 SyntacticMatches, 7 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3231 ImplicationChecksByTransitivity, 2884.8ms TimeCoverageRelationStatistics Valid=494, Invalid=11062, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 23:27:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 23:27:59,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-05-02 23:27:59,463 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) [2021-05-02 23:27:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-05-02 23:27:59,464 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 69 [2021-05-02 23:27:59,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:27:59,464 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-05-02 23:27:59,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 54 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) [2021-05-02 23:27:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-05-02 23:27:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-02 23:27:59,465 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:27:59,465 INFO L523 BasicCegarLoop]: trace histogram [44, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:27:59,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-02 23:27:59,465 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:27:59,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:27:59,465 INFO L82 PathProgramCache]: Analyzing trace with hash 849639939, now seen corresponding path program 48 times [2021-05-02 23:27:59,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:27:59,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565188281] [2021-05-02 23:27:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:27:59,487 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2321 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2321} OutVars{main_~y~0=v_main_~y~0_2321} AuxVars[] AssignedVars[] [2021-05-02 23:27:59,488 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:27:59,495 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:59,510 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:59,519 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:27:59,539 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_2323 4294967296)) (< (mod (+ v_main_~x~0_533 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_533, main_~y~0=v_main_~y~0_2323} OutVars{main_~x~0=v_main_~x~0_533, main_~y~0=v_main_~y~0_2323} AuxVars[] AssignedVars[] [2021-05-02 23:27:59,541 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:27:59,541 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:59,544 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:27:59,563 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:27:59,588 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_537 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_537} OutVars{main_~x~0=v_main_~x~0_537} AuxVars[] AssignedVars[] [2021-05-02 23:27:59,590 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:27:59,601 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:59,613 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:59,628 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:27:59,649 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:27:59,649 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:27:59,656 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:27:59,662 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:27:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:59,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:27:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:27:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:01,330 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:01,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565188281] [2021-05-02 23:28:01,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [565188281] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:01,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:01,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2021-05-02 23:28:01,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990641655] [2021-05-02 23:28:01,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 23:28:01,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:01,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 23:28:01,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3231, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 23:28:01,332 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 57 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 55 states have internal predecessors, (66), 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) [2021-05-02 23:28:04,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:04,475 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2021-05-02 23:28:04,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 23:28:04,476 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 55 states have internal predecessors, (66), 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 70 [2021-05-02 23:28:04,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:04,476 INFO L225 Difference]: With dead ends: 80 [2021-05-02 23:28:04,476 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 23:28:04,477 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 7 SyntacticMatches, 7 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2268 ImplicationChecksByTransitivity, 3577.9ms TimeCoverageRelationStatistics Valid=463, Invalid=11309, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 23:28:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 23:28:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-02 23:28:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 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) [2021-05-02 23:28:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2021-05-02 23:28:04,491 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 70 [2021-05-02 23:28:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:04,491 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-05-02 23:28:04,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 55 states have internal predecessors, (66), 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) [2021-05-02 23:28:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2021-05-02 23:28:04,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 23:28:04,492 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:04,492 INFO L523 BasicCegarLoop]: trace histogram [45, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:04,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-02 23:28:04,492 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:04,493 INFO L82 PathProgramCache]: Analyzing trace with hash -873732614, now seen corresponding path program 49 times [2021-05-02 23:28:04,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:04,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817466901] [2021-05-02 23:28:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:04,518 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2398 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2398} OutVars{main_~y~0=v_main_~y~0_2398} AuxVars[] AssignedVars[] [2021-05-02 23:28:04,519 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:04,527 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:04,543 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:04,554 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:04,576 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_548 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_2400 4294967296))) InVars {main_~x~0=v_main_~x~0_548, main_~y~0=v_main_~y~0_2400} OutVars{main_~x~0=v_main_~x~0_548, main_~y~0=v_main_~y~0_2400} AuxVars[] AssignedVars[] [2021-05-02 23:28:04,578 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:04,578 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:04,581 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:04,600 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:04,624 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_552 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_552} OutVars{main_~x~0=v_main_~x~0_552} AuxVars[] AssignedVars[] [2021-05-02 23:28:04,625 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:04,636 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:04,654 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:04,670 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:04,694 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:04,694 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:04,701 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:04,707 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:06,287 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:06,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817466901] [2021-05-02 23:28:06,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [817466901] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:06,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:06,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-02 23:28:06,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329051689] [2021-05-02 23:28:06,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 23:28:06,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:06,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 23:28:06,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3346, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 23:28:06,289 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 58 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 56 states have internal predecessors, (67), 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) [2021-05-02 23:28:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:09,394 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2021-05-02 23:28:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 23:28:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 56 states have internal predecessors, (67), 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 71 [2021-05-02 23:28:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:09,395 INFO L225 Difference]: With dead ends: 81 [2021-05-02 23:28:09,395 INFO L226 Difference]: Without dead ends: 73 [2021-05-02 23:28:09,400 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 7 SyntacticMatches, 7 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2342 ImplicationChecksByTransitivity, 3510.1ms TimeCoverageRelationStatistics Valid=471, Invalid=11739, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 23:28:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-02 23:28:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-05-02 23:28:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 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) [2021-05-02 23:28:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-05-02 23:28:09,420 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 71 [2021-05-02 23:28:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:09,420 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-05-02 23:28:09,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 56 states have internal predecessors, (67), 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) [2021-05-02 23:28:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-05-02 23:28:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-02 23:28:09,421 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:09,421 INFO L523 BasicCegarLoop]: trace histogram [46, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:09,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-02 23:28:09,421 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:09,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1536293091, now seen corresponding path program 50 times [2021-05-02 23:28:09,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:09,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548990440] [2021-05-02 23:28:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:09,448 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2477 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2477} OutVars{main_~y~0=v_main_~y~0_2477} AuxVars[] AssignedVars[] [2021-05-02 23:28:09,450 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:09,450 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:09,465 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:09,484 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:09,513 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_563 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_2479 4294967296))) InVars {main_~x~0=v_main_~x~0_563, main_~y~0=v_main_~y~0_2479} OutVars{main_~x~0=v_main_~x~0_563, main_~y~0=v_main_~y~0_2479} AuxVars[] AssignedVars[] [2021-05-02 23:28:09,515 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:09,515 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:09,519 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:09,544 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:09,577 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_567 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_567} OutVars{main_~x~0=v_main_~x~0_567} AuxVars[] AssignedVars[] [2021-05-02 23:28:09,579 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:09,594 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:09,611 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:09,627 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:09,651 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:09,661 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:09,670 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:09,677 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:09,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:11,395 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:11,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548990440] [2021-05-02 23:28:11,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1548990440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:11,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:11,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2021-05-02 23:28:11,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321317090] [2021-05-02 23:28:11,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 23:28:11,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:11,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 23:28:11,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3463, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 23:28:11,397 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 59 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 57 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) [2021-05-02 23:28:14,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:14,598 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2021-05-02 23:28:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 23:28:14,598 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 57 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 [2021-05-02 23:28:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:14,599 INFO L225 Difference]: With dead ends: 82 [2021-05-02 23:28:14,599 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 23:28:14,600 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 6 SyntacticMatches, 8 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2430 ImplicationChecksByTransitivity, 3664.5ms TimeCoverageRelationStatistics Valid=479, Invalid=12177, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 23:28:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 23:28:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 23:28:14,621 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) [2021-05-02 23:28:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2021-05-02 23:28:14,622 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 72 [2021-05-02 23:28:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:14,622 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2021-05-02 23:28:14,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 57 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) [2021-05-02 23:28:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2021-05-02 23:28:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 23:28:14,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:14,622 INFO L523 BasicCegarLoop]: trace histogram [47, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:14,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-02 23:28:14,623 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:14,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1062321382, now seen corresponding path program 51 times [2021-05-02 23:28:14,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:14,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443015570] [2021-05-02 23:28:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:14,645 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2558 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2558} OutVars{main_~y~0=v_main_~y~0_2558} AuxVars[] AssignedVars[] [2021-05-02 23:28:14,646 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:14,653 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:14,668 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:14,679 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:14,700 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_2560 4294967296)) (< (mod (+ v_main_~x~0_578 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_578, main_~y~0=v_main_~y~0_2560} OutVars{main_~x~0=v_main_~x~0_578, main_~y~0=v_main_~y~0_2560} AuxVars[] AssignedVars[] [2021-05-02 23:28:14,701 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:14,713 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:14,715 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:14,724 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:14,750 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_582 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_582} OutVars{main_~x~0=v_main_~x~0_582} AuxVars[] AssignedVars[] [2021-05-02 23:28:14,751 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:14,764 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:14,777 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:14,792 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:14,816 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:14,817 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:14,825 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:14,831 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:16,509 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:16,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443015570] [2021-05-02 23:28:16,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1443015570] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:16,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:16,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-02 23:28:16,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691279953] [2021-05-02 23:28:16,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 23:28:16,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:16,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 23:28:16,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3688, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 23:28:16,512 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 60 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 58 states have internal predecessors, (69), 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) [2021-05-02 23:28:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:19,595 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2021-05-02 23:28:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 23:28:19,596 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 58 states have internal predecessors, (69), 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 73 [2021-05-02 23:28:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:19,597 INFO L225 Difference]: With dead ends: 83 [2021-05-02 23:28:19,597 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 23:28:19,598 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 6 SyntacticMatches, 7 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3737 ImplicationChecksByTransitivity, 3618.3ms TimeCoverageRelationStatistics Valid=518, Invalid=12822, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 23:28:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 23:28:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-05-02 23:28:19,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 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) [2021-05-02 23:28:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-05-02 23:28:19,614 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 73 [2021-05-02 23:28:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:19,614 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-05-02 23:28:19,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 58 states have internal predecessors, (69), 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) [2021-05-02 23:28:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-05-02 23:28:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-02 23:28:19,615 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:19,615 INFO L523 BasicCegarLoop]: trace histogram [48, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:19,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-02 23:28:19,615 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:19,615 INFO L82 PathProgramCache]: Analyzing trace with hash -14991421, now seen corresponding path program 52 times [2021-05-02 23:28:19,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:19,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339642423] [2021-05-02 23:28:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:19,642 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2641 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2641} OutVars{main_~y~0=v_main_~y~0_2641} AuxVars[] AssignedVars[] [2021-05-02 23:28:19,643 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:19,653 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:19,670 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:19,691 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:19,717 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_593 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_2643 4294967296))) InVars {main_~x~0=v_main_~x~0_593, main_~y~0=v_main_~y~0_2643} OutVars{main_~x~0=v_main_~x~0_593, main_~y~0=v_main_~y~0_2643} AuxVars[] AssignedVars[] [2021-05-02 23:28:19,719 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:19,719 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:19,723 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:19,752 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:19,785 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_597 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_597} OutVars{main_~x~0=v_main_~x~0_597} AuxVars[] AssignedVars[] [2021-05-02 23:28:19,787 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:19,803 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:19,821 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:19,846 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:19,873 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:19,874 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:19,884 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:19,891 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:19,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:21,732 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:21,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339642423] [2021-05-02 23:28:21,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [339642423] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:21,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:21,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2021-05-02 23:28:21,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910504593] [2021-05-02 23:28:21,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 23:28:21,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:21,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 23:28:21,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3812, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 23:28:21,734 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 61 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 59 states have internal predecessors, (70), 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) [2021-05-02 23:28:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:24,700 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2021-05-02 23:28:24,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 23:28:24,702 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 59 states have internal predecessors, (70), 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 74 [2021-05-02 23:28:24,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:24,702 INFO L225 Difference]: With dead ends: 84 [2021-05-02 23:28:24,702 INFO L226 Difference]: Without dead ends: 76 [2021-05-02 23:28:24,704 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3848 ImplicationChecksByTransitivity, 3698.6ms TimeCoverageRelationStatistics Valid=524, Invalid=13282, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 23:28:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-02 23:28:24,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-05-02 23:28:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 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) [2021-05-02 23:28:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-05-02 23:28:24,719 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2021-05-02 23:28:24,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:24,719 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-05-02 23:28:24,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 59 states have internal predecessors, (70), 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) [2021-05-02 23:28:24,719 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-05-02 23:28:24,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 23:28:24,719 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:24,719 INFO L523 BasicCegarLoop]: trace histogram [49, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:24,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-02 23:28:24,720 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:24,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:24,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1907500998, now seen corresponding path program 53 times [2021-05-02 23:28:24,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:24,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470257633] [2021-05-02 23:28:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:24,743 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2726 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2726} OutVars{main_~y~0=v_main_~y~0_2726} AuxVars[] AssignedVars[] [2021-05-02 23:28:24,744 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:24,752 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:24,773 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:24,797 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:24,819 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_2728 4294967296)) (< (mod (+ v_main_~x~0_608 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_608, main_~y~0=v_main_~y~0_2728} OutVars{main_~x~0=v_main_~x~0_608, main_~y~0=v_main_~y~0_2728} AuxVars[] AssignedVars[] [2021-05-02 23:28:24,821 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:24,821 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:24,824 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:24,844 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:24,873 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_612 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_612} OutVars{main_~x~0=v_main_~x~0_612} AuxVars[] AssignedVars[] [2021-05-02 23:28:24,876 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:24,887 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:24,900 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:24,916 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:24,936 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:24,937 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:24,944 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:24,950 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:26,646 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:26,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470257633] [2021-05-02 23:28:26,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1470257633] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:26,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:26,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-05-02 23:28:26,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476550463] [2021-05-02 23:28:26,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 23:28:26,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:26,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 23:28:26,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3938, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 23:28:26,649 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 62 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 60 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) [2021-05-02 23:28:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:29,671 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2021-05-02 23:28:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 23:28:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 60 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 [2021-05-02 23:28:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:29,672 INFO L225 Difference]: With dead ends: 93 [2021-05-02 23:28:29,672 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 23:28:29,673 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 6 SyntacticMatches, 7 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4239 ImplicationChecksByTransitivity, 3621.6ms TimeCoverageRelationStatistics Valid=567, Invalid=14439, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 23:28:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 23:28:29,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-05-02 23:28:29,688 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) [2021-05-02 23:28:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2021-05-02 23:28:29,689 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 75 [2021-05-02 23:28:29,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:29,689 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2021-05-02 23:28:29,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 60 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) [2021-05-02 23:28:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2021-05-02 23:28:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 23:28:29,689 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:29,690 INFO L523 BasicCegarLoop]: trace histogram [50, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:29,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-02 23:28:29,690 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:29,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1333850217, now seen corresponding path program 54 times [2021-05-02 23:28:29,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:29,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774697368] [2021-05-02 23:28:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:29,713 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2813 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2813} OutVars{main_~y~0=v_main_~y~0_2813} AuxVars[] AssignedVars[] [2021-05-02 23:28:29,714 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:29,722 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:29,736 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:29,748 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:29,769 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_2815 4294967296)) (< (mod (+ v_main_~x~0_623 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_623, main_~y~0=v_main_~y~0_2815} OutVars{main_~x~0=v_main_~x~0_623, main_~y~0=v_main_~y~0_2815} AuxVars[] AssignedVars[] [2021-05-02 23:28:29,770 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:29,784 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:29,787 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:29,797 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:29,824 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_627 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_627} OutVars{main_~x~0=v_main_~x~0_627} AuxVars[] AssignedVars[] [2021-05-02 23:28:29,825 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:29,836 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:29,848 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:29,861 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:29,883 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:29,884 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:29,889 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:28:29,894 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:32,010 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:32,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774697368] [2021-05-02 23:28:32,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1774697368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:32,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:32,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2021-05-02 23:28:32,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491061049] [2021-05-02 23:28:32,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 23:28:32,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:32,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 23:28:32,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=4192, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 23:28:32,012 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 64 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 62 states have internal predecessors, (75), 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) [2021-05-02 23:28:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:35,725 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2021-05-02 23:28:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 23:28:35,726 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 62 states have internal predecessors, (75), 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 79 [2021-05-02 23:28:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:35,727 INFO L225 Difference]: With dead ends: 91 [2021-05-02 23:28:35,727 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 23:28:35,728 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 7 SyntacticMatches, 8 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4351 ImplicationChecksByTransitivity, 4461.2ms TimeCoverageRelationStatistics Valid=579, Invalid=14921, Unknown=0, NotChecked=0, Total=15500 [2021-05-02 23:28:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 23:28:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-05-02 23:28:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 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) [2021-05-02 23:28:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-05-02 23:28:35,745 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 79 [2021-05-02 23:28:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:35,745 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-05-02 23:28:35,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 62 states have internal predecessors, (75), 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) [2021-05-02 23:28:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-05-02 23:28:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-02 23:28:35,746 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:35,746 INFO L523 BasicCegarLoop]: trace histogram [51, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:35,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-02 23:28:35,746 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:35,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:35,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1251884116, now seen corresponding path program 55 times [2021-05-02 23:28:35,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:35,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181879949] [2021-05-02 23:28:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:35,773 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2893 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2893} OutVars{main_~y~0=v_main_~y~0_2893} AuxVars[] AssignedVars[] [2021-05-02 23:28:35,775 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:35,776 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:35,793 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:35,818 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:35,846 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_2895 4294967296)) (< (mod (+ v_main_~x~0_639 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_639, main_~y~0=v_main_~y~0_2895} OutVars{main_~x~0=v_main_~x~0_639, main_~y~0=v_main_~y~0_2895} AuxVars[] AssignedVars[] [2021-05-02 23:28:35,848 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:35,849 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:35,853 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:35,887 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:35,924 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_643 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_643} OutVars{main_~x~0=v_main_~x~0_643} AuxVars[] AssignedVars[] [2021-05-02 23:28:35,926 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:35,943 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:35,962 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:35,982 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:36,013 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:36,014 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:36,026 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:36,040 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:38,154 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:38,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181879949] [2021-05-02 23:28:38,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [181879949] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:38,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:38,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2021-05-02 23:28:38,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871822627] [2021-05-02 23:28:38,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 23:28:38,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:38,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 23:28:38,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=4322, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 23:28:38,156 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 65 states, 64 states have (on average 1.1875) internal successors, (76), 63 states have internal predecessors, (76), 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) [2021-05-02 23:28:41,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:41,905 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2021-05-02 23:28:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 23:28:41,906 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.1875) internal successors, (76), 63 states have internal predecessors, (76), 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 80 [2021-05-02 23:28:41,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:41,906 INFO L225 Difference]: With dead ends: 92 [2021-05-02 23:28:41,906 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 23:28:41,908 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 8 SyntacticMatches, 7 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4419 ImplicationChecksByTransitivity, 4481.2ms TimeCoverageRelationStatistics Valid=590, Invalid=15412, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 23:28:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 23:28:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-05-02 23:28:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 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) [2021-05-02 23:28:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2021-05-02 23:28:41,925 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 80 [2021-05-02 23:28:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:41,925 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2021-05-02 23:28:41,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 64 states have (on average 1.1875) internal successors, (76), 63 states have internal predecessors, (76), 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) [2021-05-02 23:28:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2021-05-02 23:28:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 23:28:41,926 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:41,926 INFO L523 BasicCegarLoop]: trace histogram [52, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:41,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-02 23:28:41,926 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:41,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1289065015, now seen corresponding path program 56 times [2021-05-02 23:28:41,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:41,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965275818] [2021-05-02 23:28:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:41,977 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2975 4294967296) 10) InVars {main_~y~0=v_main_~y~0_2975} OutVars{main_~y~0=v_main_~y~0_2975} AuxVars[] AssignedVars[] [2021-05-02 23:28:41,979 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:41,981 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:42,000 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:42,022 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:42,044 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_655 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_2977 4294967296))) InVars {main_~x~0=v_main_~x~0_655, main_~y~0=v_main_~y~0_2977} OutVars{main_~x~0=v_main_~x~0_655, main_~y~0=v_main_~y~0_2977} AuxVars[] AssignedVars[] [2021-05-02 23:28:42,045 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:42,059 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:42,062 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:42,072 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:42,100 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_659 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_659} OutVars{main_~x~0=v_main_~x~0_659} AuxVars[] AssignedVars[] [2021-05-02 23:28:42,101 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:42,102 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:42,118 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:42,145 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:42,169 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:42,170 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:42,180 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:42,188 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:44,150 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:44,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965275818] [2021-05-02 23:28:44,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1965275818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:44,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:44,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2021-05-02 23:28:44,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228034394] [2021-05-02 23:28:44,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 23:28:44,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:44,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 23:28:44,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=4454, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 23:28:44,151 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 64 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) [2021-05-02 23:28:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:47,690 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2021-05-02 23:28:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 23:28:47,690 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 64 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 [2021-05-02 23:28:47,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:47,691 INFO L225 Difference]: With dead ends: 93 [2021-05-02 23:28:47,691 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 23:28:47,692 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 7 SyntacticMatches, 8 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4588 ImplicationChecksByTransitivity, 4062.5ms TimeCoverageRelationStatistics Valid=601, Invalid=15911, Unknown=0, NotChecked=0, Total=16512 [2021-05-02 23:28:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 23:28:47,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2021-05-02 23:28:47,707 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) [2021-05-02 23:28:47,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-05-02 23:28:47,708 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 81 [2021-05-02 23:28:47,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:47,708 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-05-02 23:28:47,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 64 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) [2021-05-02 23:28:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-05-02 23:28:47,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-02 23:28:47,708 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:47,709 INFO L523 BasicCegarLoop]: trace histogram [53, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:47,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-02 23:28:47,709 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:47,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1545890548, now seen corresponding path program 57 times [2021-05-02 23:28:47,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:47,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749096656] [2021-05-02 23:28:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:47,731 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3059 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3059} OutVars{main_~y~0=v_main_~y~0_3059} AuxVars[] AssignedVars[] [2021-05-02 23:28:47,732 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:47,739 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:47,752 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:47,763 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:47,786 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_671 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_3061 4294967296))) InVars {main_~x~0=v_main_~x~0_671, main_~y~0=v_main_~y~0_3061} OutVars{main_~x~0=v_main_~x~0_671, main_~y~0=v_main_~y~0_3061} AuxVars[] AssignedVars[] [2021-05-02 23:28:47,787 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:47,800 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:47,802 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:47,812 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:47,843 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_675 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_675} OutVars{main_~x~0=v_main_~x~0_675} AuxVars[] AssignedVars[] [2021-05-02 23:28:47,845 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:47,859 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:47,877 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:47,895 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:47,920 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:47,920 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:47,928 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:47,934 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:50,311 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:50,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749096656] [2021-05-02 23:28:50,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [749096656] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:50,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:50,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2021-05-02 23:28:50,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661766568] [2021-05-02 23:28:50,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 23:28:50,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 23:28:50,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=4471, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 23:28:50,313 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 67 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 65 states have internal predecessors, (78), 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) [2021-05-02 23:28:55,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:28:55,584 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2021-05-02 23:28:55,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 23:28:55,585 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 65 states have internal predecessors, (78), 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 82 [2021-05-02 23:28:55,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:28:55,586 INFO L225 Difference]: With dead ends: 92 [2021-05-02 23:28:55,586 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 23:28:55,587 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 6 SyntacticMatches, 10 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 5518.5ms TimeCoverageRelationStatistics Valid=543, Invalid=15969, Unknown=0, NotChecked=0, Total=16512 [2021-05-02 23:28:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 23:28:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-05-02 23:28:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 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) [2021-05-02 23:28:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2021-05-02 23:28:55,605 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2021-05-02 23:28:55,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:28:55,605 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2021-05-02 23:28:55,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 65 states have internal predecessors, (78), 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) [2021-05-02 23:28:55,605 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2021-05-02 23:28:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 23:28:55,606 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:55,606 INFO L523 BasicCegarLoop]: trace histogram [54, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:55,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-02 23:28:55,606 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash -764800215, now seen corresponding path program 58 times [2021-05-02 23:28:55,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:55,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447375300] [2021-05-02 23:28:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:55,636 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3145 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3145} OutVars{main_~y~0=v_main_~y~0_3145} AuxVars[] AssignedVars[] [2021-05-02 23:28:55,638 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:28:55,639 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:55,657 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:55,688 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:28:55,714 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_687 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_3147 4294967296))) InVars {main_~x~0=v_main_~x~0_687, main_~y~0=v_main_~y~0_3147} OutVars{main_~x~0=v_main_~x~0_687, main_~y~0=v_main_~y~0_3147} AuxVars[] AssignedVars[] [2021-05-02 23:28:55,716 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:28:55,717 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:55,720 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:28:55,751 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:28:55,787 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_691 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_691} OutVars{main_~x~0=v_main_~x~0_691} AuxVars[] AssignedVars[] [2021-05-02 23:28:55,788 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:28:55,805 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:55,849 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:55,869 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:28:55,899 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:28:55,900 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:28:55,911 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:28:55,922 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:28:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:56,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:28:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:28:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:28:58,740 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:28:58,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447375300] [2021-05-02 23:28:58,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1447375300] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:28:58,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:28:58,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-02 23:28:58,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861710298] [2021-05-02 23:28:58,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 23:28:58,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:28:58,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 23:28:58,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=4606, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 23:28:58,742 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 68 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 66 states have internal predecessors, (79), 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) [2021-05-02 23:29:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:04,179 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2021-05-02 23:29:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 23:29:04,180 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 66 states have internal predecessors, (79), 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 83 [2021-05-02 23:29:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:04,181 INFO L225 Difference]: With dead ends: 93 [2021-05-02 23:29:04,181 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 23:29:04,182 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 5 SyntacticMatches, 11 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3189 ImplicationChecksByTransitivity, 6172.5ms TimeCoverageRelationStatistics Valid=551, Invalid=16479, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 23:29:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 23:29:04,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-05-02 23:29:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 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) [2021-05-02 23:29:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2021-05-02 23:29:04,199 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 83 [2021-05-02 23:29:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:04,199 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2021-05-02 23:29:04,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 66 states have internal predecessors, (79), 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) [2021-05-02 23:29:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2021-05-02 23:29:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-05-02 23:29:04,199 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:04,199 INFO L523 BasicCegarLoop]: trace histogram [55, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:29:04,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-02 23:29:04,199 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:04,200 INFO L82 PathProgramCache]: Analyzing trace with hash 618230164, now seen corresponding path program 59 times [2021-05-02 23:29:04,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:04,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451806138] [2021-05-02 23:29:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:04,226 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3233 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3233} OutVars{main_~y~0=v_main_~y~0_3233} AuxVars[] AssignedVars[] [2021-05-02 23:29:04,228 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:29:04,237 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:04,257 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:04,270 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:29:04,296 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_703 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_3235 4294967296))) InVars {main_~x~0=v_main_~x~0_703, main_~y~0=v_main_~y~0_3235} OutVars{main_~x~0=v_main_~x~0_703, main_~y~0=v_main_~y~0_3235} AuxVars[] AssignedVars[] [2021-05-02 23:29:04,298 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:29:04,299 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:04,302 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:29:04,332 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:29:04,368 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_707 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_707} OutVars{main_~x~0=v_main_~x~0_707} AuxVars[] AssignedVars[] [2021-05-02 23:29:04,370 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:29:04,371 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:04,389 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:04,425 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:29:04,460 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:29:04,461 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:04,471 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:04,478 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:29:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:04,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:06,893 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:06,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451806138] [2021-05-02 23:29:06,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1451806138] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:06,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:06,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2021-05-02 23:29:06,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439476279] [2021-05-02 23:29:06,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 23:29:06,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:06,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 23:29:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4862, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 23:29:06,895 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 69 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 67 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) [2021-05-02 23:29:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:10,656 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2021-05-02 23:29:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 23:29:10,657 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 67 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 [2021-05-02 23:29:10,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:10,657 INFO L225 Difference]: With dead ends: 96 [2021-05-02 23:29:10,657 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 23:29:10,658 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 8 SyntacticMatches, 7 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4901 ImplicationChecksByTransitivity, 4734.7ms TimeCoverageRelationStatistics Valid=634, Invalid=17456, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 23:29:10,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 23:29:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-05-02 23:29:10,675 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) [2021-05-02 23:29:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2021-05-02 23:29:10,676 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 84 [2021-05-02 23:29:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:10,676 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2021-05-02 23:29:10,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 67 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) [2021-05-02 23:29:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2021-05-02 23:29:10,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 23:29:10,676 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:10,677 INFO L523 BasicCegarLoop]: trace histogram [56, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:29:10,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-02 23:29:10,677 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:10,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash 542498953, now seen corresponding path program 60 times [2021-05-02 23:29:10,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:10,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991602186] [2021-05-02 23:29:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:10,700 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3323 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3323} OutVars{main_~y~0=v_main_~y~0_3323} AuxVars[] AssignedVars[] [2021-05-02 23:29:10,701 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:29:10,701 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:10,713 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:10,731 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:29:10,751 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_3325 4294967296)) (< (mod (+ v_main_~x~0_719 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_719, main_~y~0=v_main_~y~0_3325} OutVars{main_~x~0=v_main_~x~0_719, main_~y~0=v_main_~y~0_3325} AuxVars[] AssignedVars[] [2021-05-02 23:29:10,752 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:29:10,752 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:10,755 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:29:10,774 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:29:10,802 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_723 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_723} OutVars{main_~x~0=v_main_~x~0_723} AuxVars[] AssignedVars[] [2021-05-02 23:29:10,803 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:29:10,804 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:10,829 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:10,853 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:29:10,876 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:29:10,877 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:10,885 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:10,892 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:29:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:11,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:13,299 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:13,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991602186] [2021-05-02 23:29:13,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1991602186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:13,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:13,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-05-02 23:29:13,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113717429] [2021-05-02 23:29:13,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 23:29:13,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:13,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 23:29:13,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=5032, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 23:29:13,301 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 70 states, 69 states have (on average 1.173913043478261) internal successors, (81), 68 states have internal predecessors, (81), 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) [2021-05-02 23:29:18,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:18,693 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2021-05-02 23:29:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 23:29:18,694 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.173913043478261) internal successors, (81), 68 states have internal predecessors, (81), 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 85 [2021-05-02 23:29:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:18,695 INFO L225 Difference]: With dead ends: 95 [2021-05-02 23:29:18,695 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 23:29:18,696 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 8 SyntacticMatches, 7 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4642 ImplicationChecksByTransitivity, 5537.2ms TimeCoverageRelationStatistics Valid=550, Invalid=17810, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 23:29:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 23:29:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-05-02 23:29:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 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) [2021-05-02 23:29:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2021-05-02 23:29:18,715 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 85 [2021-05-02 23:29:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:18,715 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2021-05-02 23:29:18,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 69 states have (on average 1.173913043478261) internal successors, (81), 68 states have internal predecessors, (81), 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) [2021-05-02 23:29:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2021-05-02 23:29:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-02 23:29:18,715 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:18,715 INFO L523 BasicCegarLoop]: trace histogram [57, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:29:18,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-02 23:29:18,716 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:18,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1805168588, now seen corresponding path program 61 times [2021-05-02 23:29:18,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:18,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451738912] [2021-05-02 23:29:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:18,744 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3415 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3415} OutVars{main_~y~0=v_main_~y~0_3415} AuxVars[] AssignedVars[] [2021-05-02 23:29:18,746 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:29:18,759 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:18,782 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:18,801 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:29:18,833 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_735 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_3417 4294967296))) InVars {main_~x~0=v_main_~x~0_735, main_~y~0=v_main_~y~0_3417} OutVars{main_~x~0=v_main_~x~0_735, main_~y~0=v_main_~y~0_3417} AuxVars[] AssignedVars[] [2021-05-02 23:29:18,835 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:29:18,859 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:18,863 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:29:18,879 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:29:18,919 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_739 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_739} OutVars{main_~x~0=v_main_~x~0_739} AuxVars[] AssignedVars[] [2021-05-02 23:29:18,921 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:29:18,940 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:18,957 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:18,984 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:29:19,028 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:29:19,029 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:19,041 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:19,049 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:29:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:22,053 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:22,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451738912] [2021-05-02 23:29:22,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1451738912] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:22,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:22,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2021-05-02 23:29:22,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275412939] [2021-05-02 23:29:22,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 23:29:22,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:22,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 23:29:22,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=5099, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 23:29:22,054 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 71 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 69 states have internal predecessors, (82), 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) [2021-05-02 23:29:27,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:27,382 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2021-05-02 23:29:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 23:29:27,383 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 69 states have internal predecessors, (82), 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 86 [2021-05-02 23:29:27,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:27,384 INFO L225 Difference]: With dead ends: 96 [2021-05-02 23:29:27,384 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 23:29:27,385 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 7 SyntacticMatches, 8 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 6275.5ms TimeCoverageRelationStatistics Valid=709, Invalid=18197, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 23:29:27,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 23:29:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-02 23:29:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 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) [2021-05-02 23:29:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2021-05-02 23:29:27,402 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2021-05-02 23:29:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:27,402 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2021-05-02 23:29:27,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 69 states have internal predecessors, (82), 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) [2021-05-02 23:29:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2021-05-02 23:29:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 23:29:27,403 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:27,403 INFO L523 BasicCegarLoop]: trace histogram [58, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:29:27,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-02 23:29:27,403 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:27,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1568418327, now seen corresponding path program 62 times [2021-05-02 23:29:27,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:27,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885655788] [2021-05-02 23:29:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:27,430 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3509 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3509} OutVars{main_~y~0=v_main_~y~0_3509} AuxVars[] AssignedVars[] [2021-05-02 23:29:27,431 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:29:27,438 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:27,451 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:27,480 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:29:27,505 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_751 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_3511 4294967296))) InVars {main_~x~0=v_main_~x~0_751, main_~y~0=v_main_~y~0_3511} OutVars{main_~x~0=v_main_~x~0_751, main_~y~0=v_main_~y~0_3511} AuxVars[] AssignedVars[] [2021-05-02 23:29:27,506 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:29:27,507 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:27,509 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:29:27,530 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:29:27,557 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_755 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_755} OutVars{main_~x~0=v_main_~x~0_755} AuxVars[] AssignedVars[] [2021-05-02 23:29:27,559 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:29:27,570 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:27,586 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:27,600 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:29:27,626 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:29:27,627 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:27,635 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:27,640 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:29:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:27,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:30,140 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:30,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885655788] [2021-05-02 23:29:30,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [885655788] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:30,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:30,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-02 23:29:30,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548978013] [2021-05-02 23:29:30,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 23:29:30,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:30,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 23:29:30,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=5166, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 23:29:30,142 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 72 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 70 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) [2021-05-02 23:29:35,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:35,103 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2021-05-02 23:29:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 23:29:35,103 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 70 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 [2021-05-02 23:29:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:35,104 INFO L225 Difference]: With dead ends: 97 [2021-05-02 23:29:35,104 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 23:29:35,105 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 7 SyntacticMatches, 9 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3509 ImplicationChecksByTransitivity, 5525.5ms TimeCoverageRelationStatistics Valid=583, Invalid=18599, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 23:29:35,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 23:29:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-05-02 23:29:35,123 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) [2021-05-02 23:29:35,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-05-02 23:29:35,124 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 87 [2021-05-02 23:29:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:35,124 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-05-02 23:29:35,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 70 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) [2021-05-02 23:29:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-05-02 23:29:35,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-05-02 23:29:35,125 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:35,125 INFO L523 BasicCegarLoop]: trace histogram [59, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:29:35,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-02 23:29:35,125 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:35,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:35,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1475872468, now seen corresponding path program 63 times [2021-05-02 23:29:35,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:35,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768434328] [2021-05-02 23:29:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:35,158 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3605 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3605} OutVars{main_~y~0=v_main_~y~0_3605} AuxVars[] AssignedVars[] [2021-05-02 23:29:35,159 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:29:35,166 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:35,184 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:35,205 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:29:35,233 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_3607 4294967296)) (< (mod (+ v_main_~x~0_767 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_767, main_~y~0=v_main_~y~0_3607} OutVars{main_~x~0=v_main_~x~0_767, main_~y~0=v_main_~y~0_3607} AuxVars[] AssignedVars[] [2021-05-02 23:29:35,234 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:29:35,248 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:35,251 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:29:35,262 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:29:35,292 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_771 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_771} OutVars{main_~x~0=v_main_~x~0_771} AuxVars[] AssignedVars[] [2021-05-02 23:29:35,293 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:29:35,306 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:35,324 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:35,341 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:29:35,367 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:29:35,367 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:35,376 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:35,382 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:29:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:35,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:38,317 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:38,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768434328] [2021-05-02 23:29:38,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1768434328] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:38,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:38,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2021-05-02 23:29:38,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817273202] [2021-05-02 23:29:38,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 23:29:38,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:38,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 23:29:38,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=5311, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 23:29:38,319 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 73 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 71 states have internal predecessors, (84), 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) [2021-05-02 23:29:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:44,010 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2021-05-02 23:29:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 23:29:44,010 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 71 states have internal predecessors, (84), 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 88 [2021-05-02 23:29:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:44,011 INFO L225 Difference]: With dead ends: 100 [2021-05-02 23:29:44,011 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 23:29:44,012 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 6 SyntacticMatches, 10 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3611 ImplicationChecksByTransitivity, 6366.4ms TimeCoverageRelationStatistics Valid=591, Invalid=19149, Unknown=0, NotChecked=0, Total=19740 [2021-05-02 23:29:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 23:29:44,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2021-05-02 23:29:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 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) [2021-05-02 23:29:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2021-05-02 23:29:44,030 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2021-05-02 23:29:44,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:44,030 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2021-05-02 23:29:44,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 71 states have internal predecessors, (84), 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) [2021-05-02 23:29:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2021-05-02 23:29:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 23:29:44,031 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:44,031 INFO L523 BasicCegarLoop]: trace histogram [60, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:29:44,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-02 23:29:44,031 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:44,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:44,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1359606601, now seen corresponding path program 64 times [2021-05-02 23:29:44,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:44,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904379409] [2021-05-02 23:29:44,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:44,057 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3703 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3703} OutVars{main_~y~0=v_main_~y~0_3703} AuxVars[] AssignedVars[] [2021-05-02 23:29:44,058 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:29:44,059 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:44,075 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:44,102 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:29:44,133 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_3705 4294967296)) (< (mod (+ v_main_~x~0_783 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_783, main_~y~0=v_main_~y~0_3705} OutVars{main_~x~0=v_main_~x~0_783, main_~y~0=v_main_~y~0_3705} AuxVars[] AssignedVars[] [2021-05-02 23:29:44,134 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:29:44,135 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:44,138 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:29:44,161 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:29:44,194 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_787 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_787} OutVars{main_~x~0=v_main_~x~0_787} AuxVars[] AssignedVars[] [2021-05-02 23:29:44,196 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:29:44,210 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:44,226 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:44,241 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:29:44,268 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:29:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:47,326 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:47,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904379409] [2021-05-02 23:29:47,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [904379409] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:47,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:47,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2021-05-02 23:29:47,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205769199] [2021-05-02 23:29:47,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 23:29:47,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:47,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 23:29:47,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=5458, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 23:29:47,328 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 74 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 72 states have internal predecessors, (85), 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) [2021-05-02 23:29:54,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:54,467 INFO L93 Difference]: Finished difference Result 98 states and 99 transitions. [2021-05-02 23:29:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 23:29:54,468 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 72 states have internal predecessors, (85), 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 89 [2021-05-02 23:29:54,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:54,469 INFO L225 Difference]: With dead ends: 98 [2021-05-02 23:29:54,469 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 23:29:54,470 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3714 ImplicationChecksByTransitivity, 7456.2ms TimeCoverageRelationStatistics Valid=599, Invalid=19707, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 23:29:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 23:29:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-05-02 23:29:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 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) [2021-05-02 23:29:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2021-05-02 23:29:54,490 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 89 [2021-05-02 23:29:54,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:54,490 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2021-05-02 23:29:54,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 72 states have internal predecessors, (85), 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) [2021-05-02 23:29:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2021-05-02 23:29:54,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-05-02 23:29:54,490 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:54,491 INFO L523 BasicCegarLoop]: trace histogram [60, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:29:54,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-02 23:29:54,491 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:54,491 INFO L82 PathProgramCache]: Analyzing trace with hash -992067069, now seen corresponding path program 65 times [2021-05-02 23:29:54,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:54,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165448440] [2021-05-02 23:29:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:54,528 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3790 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3790} OutVars{main_~y~0=v_main_~y~0_3790} AuxVars[] AssignedVars[] [2021-05-02 23:29:54,530 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:29:54,531 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:54,548 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:54,579 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:29:54,614 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_796 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_3792 4294967296))) InVars {main_~x~0=v_main_~x~0_796, main_~y~0=v_main_~y~0_3792} OutVars{main_~x~0=v_main_~x~0_796, main_~y~0=v_main_~y~0_3792} AuxVars[] AssignedVars[] [2021-05-02 23:29:54,616 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:29:54,637 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:54,641 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:29:54,656 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:29:54,698 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_800 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_800} OutVars{main_~x~0=v_main_~x~0_800} AuxVars[] AssignedVars[] [2021-05-02 23:29:54,699 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:29:54,717 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:54,741 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:29:54,765 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:29:54,805 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:29:54,806 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:29:54,815 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:29:54,822 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:29:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:54,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:58,783 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:58,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165448440] [2021-05-02 23:29:58,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [165448440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:58,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:58,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2021-05-02 23:29:58,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619986956] [2021-05-02 23:29:58,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 23:29:58,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:58,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 23:29:58,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=5607, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 23:29:58,784 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 75 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 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) [2021-05-02 23:30:04,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:04,473 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2021-05-02 23:30:04,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 23:30:04,473 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 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 92 [2021-05-02 23:30:04,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:04,474 INFO L225 Difference]: With dead ends: 102 [2021-05-02 23:30:04,474 INFO L226 Difference]: Without dead ends: 94 [2021-05-02 23:30:04,475 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 6 SyntacticMatches, 12 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3818 ImplicationChecksByTransitivity, 7347.9ms TimeCoverageRelationStatistics Valid=607, Invalid=20273, Unknown=0, NotChecked=0, Total=20880 [2021-05-02 23:30:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-02 23:30:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-05-02 23:30:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 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) [2021-05-02 23:30:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-05-02 23:30:04,494 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 92 [2021-05-02 23:30:04,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:04,495 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-05-02 23:30:04,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 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) [2021-05-02 23:30:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-05-02 23:30:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 23:30:04,495 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:04,495 INFO L523 BasicCegarLoop]: trace histogram [61, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:30:04,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-02 23:30:04,495 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:04,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2132075014, now seen corresponding path program 66 times [2021-05-02 23:30:04,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:04,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395025616] [2021-05-02 23:30:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:04,522 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3881 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3881} OutVars{main_~y~0=v_main_~y~0_3881} AuxVars[] AssignedVars[] [2021-05-02 23:30:04,523 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:30:04,524 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:04,541 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:04,564 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:30:04,587 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_3883 4294967296)) (< (mod (+ v_main_~x~0_813 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_813, main_~y~0=v_main_~y~0_3883} OutVars{main_~x~0=v_main_~x~0_813, main_~y~0=v_main_~y~0_3883} AuxVars[] AssignedVars[] [2021-05-02 23:30:04,588 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:30:04,601 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:04,604 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:30:04,615 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:30:04,642 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_817 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_817} OutVars{main_~x~0=v_main_~x~0_817} AuxVars[] AssignedVars[] [2021-05-02 23:30:04,643 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:30:04,656 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:04,674 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:04,692 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:30:04,718 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:30:04,719 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:04,727 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:04,733 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:30:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:30:07,958 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:07,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395025616] [2021-05-02 23:30:07,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1395025616] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:07,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:07,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2021-05-02 23:30:07,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793094269] [2021-05-02 23:30:07,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 23:30:07,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:07,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 23:30:07,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=5758, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 23:30:07,959 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 76 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 74 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) [2021-05-02 23:30:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:13,946 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2021-05-02 23:30:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 23:30:13,946 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 74 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 [2021-05-02 23:30:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:13,947 INFO L225 Difference]: With dead ends: 103 [2021-05-02 23:30:13,947 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 23:30:13,948 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 7 SyntacticMatches, 11 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3897 ImplicationChecksByTransitivity, 6835.8ms TimeCoverageRelationStatistics Valid=615, Invalid=20847, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 23:30:13,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 23:30:13,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-05-02 23:30:13,967 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) [2021-05-02 23:30:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2021-05-02 23:30:13,967 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 93 [2021-05-02 23:30:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:13,967 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2021-05-02 23:30:13,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 74 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) [2021-05-02 23:30:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2021-05-02 23:30:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-02 23:30:13,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:13,968 INFO L523 BasicCegarLoop]: trace histogram [62, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:30:13,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-02 23:30:13,968 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:13,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1182384355, now seen corresponding path program 67 times [2021-05-02 23:30:13,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:13,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410454539] [2021-05-02 23:30:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:13,996 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_3974 4294967296) 10) InVars {main_~y~0=v_main_~y~0_3974} OutVars{main_~y~0=v_main_~y~0_3974} AuxVars[] AssignedVars[] [2021-05-02 23:30:13,997 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:30:14,005 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:14,020 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:14,032 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:30:14,054 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_3976 4294967296)) (< (mod (+ v_main_~x~0_830 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_830, main_~y~0=v_main_~y~0_3976} OutVars{main_~x~0=v_main_~x~0_830, main_~y~0=v_main_~y~0_3976} AuxVars[] AssignedVars[] [2021-05-02 23:30:14,055 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:30:14,069 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:14,071 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:30:14,082 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:30:14,108 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_834 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_834} OutVars{main_~x~0=v_main_~x~0_834} AuxVars[] AssignedVars[] [2021-05-02 23:30:14,110 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:30:14,110 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:14,127 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:14,151 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:30:14,175 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:30:14,176 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:14,183 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:14,189 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:30:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:14,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:30:14,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:30:17,003 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:17,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410454539] [2021-05-02 23:30:17,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [410454539] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:17,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:17,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2021-05-02 23:30:17,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348963156] [2021-05-02 23:30:17,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 23:30:17,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:17,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 23:30:17,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=6046, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 23:30:17,005 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 77 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 75 states have internal predecessors, (90), 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) [2021-05-02 23:30:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:23,503 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2021-05-02 23:30:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 23:30:23,504 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 75 states have internal predecessors, (90), 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 94 [2021-05-02 23:30:23,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:23,505 INFO L225 Difference]: With dead ends: 104 [2021-05-02 23:30:23,505 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 23:30:23,506 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 7 SyntacticMatches, 10 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6039 ImplicationChecksByTransitivity, 6901.8ms TimeCoverageRelationStatistics Valid=664, Invalid=21686, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 23:30:23,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 23:30:23,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-02 23:30:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 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) [2021-05-02 23:30:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-05-02 23:30:23,526 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 94 [2021-05-02 23:30:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:23,526 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-05-02 23:30:23,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 75 states have internal predecessors, (90), 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) [2021-05-02 23:30:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-05-02 23:30:23,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 23:30:23,527 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:23,527 INFO L523 BasicCegarLoop]: trace histogram [63, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:30:23,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-02 23:30:23,527 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:23,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:23,527 INFO L82 PathProgramCache]: Analyzing trace with hash 851409690, now seen corresponding path program 68 times [2021-05-02 23:30:23,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:23,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311033206] [2021-05-02 23:30:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:23,568 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4069 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4069} OutVars{main_~y~0=v_main_~y~0_4069} AuxVars[] AssignedVars[] [2021-05-02 23:30:23,569 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:30:23,570 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:23,588 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:23,614 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:30:23,646 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_847 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_4071 4294967296))) InVars {main_~x~0=v_main_~x~0_847, main_~y~0=v_main_~y~0_4071} OutVars{main_~x~0=v_main_~x~0_847, main_~y~0=v_main_~y~0_4071} AuxVars[] AssignedVars[] [2021-05-02 23:30:23,648 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:30:23,649 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:23,654 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:30:23,689 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:30:23,730 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_851 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_851} OutVars{main_~x~0=v_main_~x~0_851} AuxVars[] AssignedVars[] [2021-05-02 23:30:23,732 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:30:23,751 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:23,769 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:23,792 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:30:23,826 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:30:23,827 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:23,839 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:23,848 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:30:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:30:28,415 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:28,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311033206] [2021-05-02 23:30:28,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [311033206] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:28,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:28,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2021-05-02 23:30:28,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273748015] [2021-05-02 23:30:28,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 23:30:28,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:28,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 23:30:28,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=6066, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 23:30:28,417 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 78 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 76 states have internal predecessors, (91), 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) [2021-05-02 23:30:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:34,884 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2021-05-02 23:30:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 23:30:34,885 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 76 states have internal predecessors, (91), 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 95 [2021-05-02 23:30:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:34,885 INFO L225 Difference]: With dead ends: 105 [2021-05-02 23:30:34,885 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 23:30:34,887 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 6 SyntacticMatches, 12 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4097 ImplicationChecksByTransitivity, 8397.7ms TimeCoverageRelationStatistics Valid=631, Invalid=22019, Unknown=0, NotChecked=0, Total=22650 [2021-05-02 23:30:34,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 23:30:34,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-05-02 23:30:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 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) [2021-05-02 23:30:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2021-05-02 23:30:34,906 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 95 [2021-05-02 23:30:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:34,906 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2021-05-02 23:30:34,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 76 states have internal predecessors, (91), 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) [2021-05-02 23:30:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2021-05-02 23:30:34,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-05-02 23:30:34,907 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:34,907 INFO L523 BasicCegarLoop]: trace histogram [64, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:30:34,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-02 23:30:34,907 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:34,907 INFO L82 PathProgramCache]: Analyzing trace with hash -818870333, now seen corresponding path program 69 times [2021-05-02 23:30:34,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:34,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852142007] [2021-05-02 23:30:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:34,932 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4166 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4166} OutVars{main_~y~0=v_main_~y~0_4166} AuxVars[] AssignedVars[] [2021-05-02 23:30:34,934 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:30:34,934 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:34,949 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:34,970 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:30:34,992 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_864 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_4168 4294967296))) InVars {main_~x~0=v_main_~x~0_864, main_~y~0=v_main_~y~0_4168} OutVars{main_~x~0=v_main_~x~0_864, main_~y~0=v_main_~y~0_4168} AuxVars[] AssignedVars[] [2021-05-02 23:30:34,994 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:30:34,994 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:34,997 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:30:35,020 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:30:35,049 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_868 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_868} OutVars{main_~x~0=v_main_~x~0_868} AuxVars[] AssignedVars[] [2021-05-02 23:30:35,050 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:30:35,067 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:35,088 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:35,103 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:30:35,131 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:30:35,131 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:35,139 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:35,145 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:30:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:30:38,318 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:38,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852142007] [2021-05-02 23:30:38,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1852142007] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:38,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:38,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2021-05-02 23:30:38,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782477437] [2021-05-02 23:30:38,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 23:30:38,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:38,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 23:30:38,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=6223, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 23:30:38,319 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 79 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 77 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) [2021-05-02 23:30:44,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:44,761 INFO L93 Difference]: Finished difference Result 106 states and 109 transitions. [2021-05-02 23:30:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 23:30:44,761 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 77 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 [2021-05-02 23:30:44,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:44,762 INFO L225 Difference]: With dead ends: 106 [2021-05-02 23:30:44,762 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 23:30:44,763 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 7 SyntacticMatches, 11 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4179 ImplicationChecksByTransitivity, 6889.5ms TimeCoverageRelationStatistics Valid=639, Invalid=22617, Unknown=0, NotChecked=0, Total=23256 [2021-05-02 23:30:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 23:30:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 23:30:44,783 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) [2021-05-02 23:30:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-05-02 23:30:44,783 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 96 [2021-05-02 23:30:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:44,784 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-05-02 23:30:44,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 77 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) [2021-05-02 23:30:44,784 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-05-02 23:30:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 23:30:44,784 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:44,784 INFO L523 BasicCegarLoop]: trace histogram [65, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:30:44,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-02 23:30:44,784 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:44,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:44,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1057943494, now seen corresponding path program 70 times [2021-05-02 23:30:44,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:44,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625055471] [2021-05-02 23:30:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:44,812 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4265 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4265} OutVars{main_~y~0=v_main_~y~0_4265} AuxVars[] AssignedVars[] [2021-05-02 23:30:44,813 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:30:44,820 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:44,842 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:44,854 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:30:44,875 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_4267 4294967296)) (< (mod (+ v_main_~x~0_881 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_881, main_~y~0=v_main_~y~0_4267} OutVars{main_~x~0=v_main_~x~0_881, main_~y~0=v_main_~y~0_4267} AuxVars[] AssignedVars[] [2021-05-02 23:30:44,876 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:30:44,889 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:44,892 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:30:44,902 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:30:44,931 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_885 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_885} OutVars{main_~x~0=v_main_~x~0_885} AuxVars[] AssignedVars[] [2021-05-02 23:30:44,932 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:30:44,933 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:44,951 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:44,980 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:30:45,005 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:30:45,006 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:45,015 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:45,023 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:30:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:30:48,035 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:48,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625055471] [2021-05-02 23:30:48,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [625055471] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:48,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:48,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2021-05-02 23:30:48,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263731828] [2021-05-02 23:30:48,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 23:30:48,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:48,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 23:30:48,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=6526, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 23:30:48,037 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 80 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 78 states have internal predecessors, (93), 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) [2021-05-02 23:30:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:54,482 INFO L93 Difference]: Finished difference Result 107 states and 110 transitions. [2021-05-02 23:30:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 23:30:54,482 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 78 states have internal predecessors, (93), 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 97 [2021-05-02 23:30:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:54,483 INFO L225 Difference]: With dead ends: 107 [2021-05-02 23:30:54,483 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 23:30:54,484 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 8 SyntacticMatches, 9 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6511 ImplicationChecksByTransitivity, 6470.4ms TimeCoverageRelationStatistics Valid=682, Invalid=23498, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 23:30:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 23:30:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-05-02 23:30:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 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) [2021-05-02 23:30:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2021-05-02 23:30:54,505 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 97 [2021-05-02 23:30:54,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:54,505 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2021-05-02 23:30:54,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 78 states have internal predecessors, (93), 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) [2021-05-02 23:30:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2021-05-02 23:30:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-05-02 23:30:54,505 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:54,505 INFO L523 BasicCegarLoop]: trace histogram [66, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:30:54,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-02 23:30:54,506 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:54,506 INFO L82 PathProgramCache]: Analyzing trace with hash 120723107, now seen corresponding path program 71 times [2021-05-02 23:30:54,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:54,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060944850] [2021-05-02 23:30:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:54,534 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4366 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4366} OutVars{main_~y~0=v_main_~y~0_4366} AuxVars[] AssignedVars[] [2021-05-02 23:30:54,535 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:30:54,543 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:54,561 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:54,575 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:30:54,603 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_4368 4294967296)) (< (mod (+ v_main_~x~0_898 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_898, main_~y~0=v_main_~y~0_4368} OutVars{main_~x~0=v_main_~x~0_898, main_~y~0=v_main_~y~0_4368} AuxVars[] AssignedVars[] [2021-05-02 23:30:54,605 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:30:54,605 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:54,608 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:30:54,633 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:30:54,672 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_902 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_902} OutVars{main_~x~0=v_main_~x~0_902} AuxVars[] AssignedVars[] [2021-05-02 23:30:54,673 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:30:54,687 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:54,705 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:54,725 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:30:54,755 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:30:54,756 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:30:54,765 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:30:54,772 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:30:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:30:58,643 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:58,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060944850] [2021-05-02 23:30:58,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1060944850] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:58,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:58,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2021-05-02 23:30:58,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953221956] [2021-05-02 23:30:58,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 23:30:58,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:58,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 23:30:58,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=6543, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 23:30:58,645 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 81 states, 80 states have (on average 1.175) internal successors, (94), 79 states have internal predecessors, (94), 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) [2021-05-02 23:31:06,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:06,121 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2021-05-02 23:31:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 23:31:06,122 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.175) internal successors, (94), 79 states have internal predecessors, (94), 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 98 [2021-05-02 23:31:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:06,122 INFO L225 Difference]: With dead ends: 108 [2021-05-02 23:31:06,122 INFO L226 Difference]: Without dead ends: 100 [2021-05-02 23:31:06,123 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 7 SyntacticMatches, 11 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4372 ImplicationChecksByTransitivity, 8158.0ms TimeCoverageRelationStatistics Valid=655, Invalid=23837, Unknown=0, NotChecked=0, Total=24492 [2021-05-02 23:31:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-02 23:31:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-05-02 23:31:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 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) [2021-05-02 23:31:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2021-05-02 23:31:06,144 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2021-05-02 23:31:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:06,144 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2021-05-02 23:31:06,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 80 states have (on average 1.175) internal successors, (94), 79 states have internal predecessors, (94), 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) [2021-05-02 23:31:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2021-05-02 23:31:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 23:31:06,145 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:06,145 INFO L523 BasicCegarLoop]: trace histogram [67, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:31:06,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-02 23:31:06,145 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:06,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:06,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1995317926, now seen corresponding path program 72 times [2021-05-02 23:31:06,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:06,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932472600] [2021-05-02 23:31:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:06,170 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4469 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4469} OutVars{main_~y~0=v_main_~y~0_4469} AuxVars[] AssignedVars[] [2021-05-02 23:31:06,171 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:31:06,172 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:06,186 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:06,205 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:31:06,230 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_915 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_4471 4294967296))) InVars {main_~x~0=v_main_~x~0_915, main_~y~0=v_main_~y~0_4471} OutVars{main_~x~0=v_main_~x~0_915, main_~y~0=v_main_~y~0_4471} AuxVars[] AssignedVars[] [2021-05-02 23:31:06,231 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:31:06,245 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:06,248 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:31:06,258 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:31:06,287 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_919 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_919} OutVars{main_~x~0=v_main_~x~0_919} AuxVars[] AssignedVars[] [2021-05-02 23:31:06,288 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:31:06,289 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:06,306 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:06,334 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:31:06,362 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:31:06,362 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:06,370 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:06,377 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:31:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:06,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:31:09,672 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:09,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932472600] [2021-05-02 23:31:09,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1932472600] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:09,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:09,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2021-05-02 23:31:09,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113151611] [2021-05-02 23:31:09,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 23:31:09,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:09,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 23:31:09,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=6856, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 23:31:09,673 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 82 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 80 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) [2021-05-02 23:31:15,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:15,188 INFO L93 Difference]: Finished difference Result 109 states and 112 transitions. [2021-05-02 23:31:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 23:31:15,188 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 80 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 [2021-05-02 23:31:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:15,189 INFO L225 Difference]: With dead ends: 109 [2021-05-02 23:31:15,189 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 23:31:15,190 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 8 SyntacticMatches, 9 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6848 ImplicationChecksByTransitivity, 6688.3ms TimeCoverageRelationStatistics Valid=694, Invalid=24746, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 23:31:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 23:31:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-02 23:31:15,210 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) [2021-05-02 23:31:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2021-05-02 23:31:15,210 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 99 [2021-05-02 23:31:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:15,211 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2021-05-02 23:31:15,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 80 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) [2021-05-02 23:31:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2021-05-02 23:31:15,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-05-02 23:31:15,211 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:15,211 INFO L523 BasicCegarLoop]: trace histogram [68, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:31:15,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-02 23:31:15,211 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:15,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:15,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1126886787, now seen corresponding path program 73 times [2021-05-02 23:31:15,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:15,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761160307] [2021-05-02 23:31:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:15,243 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4574 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4574} OutVars{main_~y~0=v_main_~y~0_4574} AuxVars[] AssignedVars[] [2021-05-02 23:31:15,244 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:31:15,245 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:15,260 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:15,285 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:31:15,308 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_4576 4294967296)) (< (mod (+ v_main_~x~0_932 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_932, main_~y~0=v_main_~y~0_4576} OutVars{main_~x~0=v_main_~x~0_932, main_~y~0=v_main_~y~0_4576} AuxVars[] AssignedVars[] [2021-05-02 23:31:15,310 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:31:15,310 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:15,313 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:31:15,337 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:31:15,367 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_936 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_936} OutVars{main_~x~0=v_main_~x~0_936} AuxVars[] AssignedVars[] [2021-05-02 23:31:15,369 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:31:15,381 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:15,401 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:15,419 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:31:15,447 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:31:15,448 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:15,457 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:15,464 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:31:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:31:18,856 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:18,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761160307] [2021-05-02 23:31:18,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [761160307] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:18,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:18,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2021-05-02 23:31:18,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677046570] [2021-05-02 23:31:18,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 23:31:18,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:18,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 23:31:18,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=7024, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 23:31:18,858 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 83 states, 82 states have (on average 1.170731707317073) internal successors, (96), 81 states have internal predecessors, (96), 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) [2021-05-02 23:31:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:24,583 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2021-05-02 23:31:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 23:31:24,584 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.170731707317073) internal successors, (96), 81 states have internal predecessors, (96), 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 100 [2021-05-02 23:31:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:24,584 INFO L225 Difference]: With dead ends: 110 [2021-05-02 23:31:24,584 INFO L226 Difference]: Without dead ends: 102 [2021-05-02 23:31:24,586 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 8 SyntacticMatches, 9 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7006 ImplicationChecksByTransitivity, 6907.8ms TimeCoverageRelationStatistics Valid=700, Invalid=25382, Unknown=0, NotChecked=0, Total=26082 [2021-05-02 23:31:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-02 23:31:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-05-02 23:31:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 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) [2021-05-02 23:31:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2021-05-02 23:31:24,609 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 100 [2021-05-02 23:31:24,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:24,609 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2021-05-02 23:31:24,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 82 states have (on average 1.170731707317073) internal successors, (96), 81 states have internal predecessors, (96), 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) [2021-05-02 23:31:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2021-05-02 23:31:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 23:31:24,609 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:24,609 INFO L523 BasicCegarLoop]: trace histogram [69, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:31:24,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-02 23:31:24,610 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:24,610 INFO L82 PathProgramCache]: Analyzing trace with hash -869014918, now seen corresponding path program 74 times [2021-05-02 23:31:24,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:24,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761523410] [2021-05-02 23:31:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:24,637 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4681 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4681} OutVars{main_~y~0=v_main_~y~0_4681} AuxVars[] AssignedVars[] [2021-05-02 23:31:24,638 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:31:24,639 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:24,657 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:24,679 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:31:24,704 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_949 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_4683 4294967296))) InVars {main_~x~0=v_main_~x~0_949, main_~y~0=v_main_~y~0_4683} OutVars{main_~x~0=v_main_~x~0_949, main_~y~0=v_main_~y~0_4683} AuxVars[] AssignedVars[] [2021-05-02 23:31:24,705 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:31:24,721 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:24,724 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:31:24,737 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:31:24,772 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_953 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_953} OutVars{main_~x~0=v_main_~x~0_953} AuxVars[] AssignedVars[] [2021-05-02 23:31:24,774 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:31:24,791 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:24,806 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:24,822 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:31:24,850 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:31:24,851 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:24,859 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:24,866 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:31:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:24,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:31:28,582 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:28,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761523410] [2021-05-02 23:31:28,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1761523410] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:28,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:28,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2021-05-02 23:31:28,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612822765] [2021-05-02 23:31:28,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 23:31:28,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:28,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 23:31:28,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=7194, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 23:31:28,584 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand has 84 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 82 states have internal predecessors, (97), 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) [2021-05-02 23:31:35,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:35,043 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2021-05-02 23:31:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 23:31:35,044 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 82 states have internal predecessors, (97), 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 101 [2021-05-02 23:31:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:35,045 INFO L225 Difference]: With dead ends: 119 [2021-05-02 23:31:35,045 INFO L226 Difference]: Without dead ends: 108 [2021-05-02 23:31:35,046 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 6 SyntacticMatches, 11 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7579 ImplicationChecksByTransitivity, 7697.9ms TimeCoverageRelationStatistics Valid=754, Invalid=26968, Unknown=0, NotChecked=0, Total=27722 [2021-05-02 23:31:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-05-02 23:31:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2021-05-02 23:31:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 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) [2021-05-02 23:31:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2021-05-02 23:31:35,068 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 101 [2021-05-02 23:31:35,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:35,068 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2021-05-02 23:31:35,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 82 states have internal predecessors, (97), 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) [2021-05-02 23:31:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2021-05-02 23:31:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 23:31:35,069 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:35,069 INFO L523 BasicCegarLoop]: trace histogram [70, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:31:35,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-02 23:31:35,069 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:35,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1160258903, now seen corresponding path program 75 times [2021-05-02 23:31:35,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:35,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555208799] [2021-05-02 23:31:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:35,106 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4790 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4790} OutVars{main_~y~0=v_main_~y~0_4790} AuxVars[] AssignedVars[] [2021-05-02 23:31:35,107 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:31:35,108 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:35,127 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:35,149 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:31:35,173 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_4792 4294967296)) (< (mod (+ v_main_~x~0_966 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_966, main_~y~0=v_main_~y~0_4792} OutVars{main_~x~0=v_main_~x~0_966, main_~y~0=v_main_~y~0_4792} AuxVars[] AssignedVars[] [2021-05-02 23:31:35,175 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:31:35,189 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:35,192 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:31:35,204 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:31:35,235 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_970 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_970} OutVars{main_~x~0=v_main_~x~0_970} AuxVars[] AssignedVars[] [2021-05-02 23:31:35,237 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:31:35,250 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:35,264 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:35,282 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:31:35,325 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:31:35,325 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:35,332 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:31:35,338 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:31:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:31:39,419 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:39,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555208799] [2021-05-02 23:31:39,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1555208799] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:39,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:39,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2021-05-02 23:31:39,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296780697] [2021-05-02 23:31:39,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 23:31:39,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:39,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 23:31:39,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=7536, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 23:31:39,420 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 86 states, 85 states have (on average 1.188235294117647) internal successors, (101), 84 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) [2021-05-02 23:31:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:46,864 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2021-05-02 23:31:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 23:31:46,865 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.188235294117647) internal successors, (101), 84 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 [2021-05-02 23:31:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:46,865 INFO L225 Difference]: With dead ends: 117 [2021-05-02 23:31:46,866 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 23:31:46,867 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 7 SyntacticMatches, 12 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7690 ImplicationChecksByTransitivity, 8188.9ms TimeCoverageRelationStatistics Valid=766, Invalid=27626, Unknown=0, NotChecked=0, Total=28392 [2021-05-02 23:31:46,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 23:31:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2021-05-02 23:31:46,889 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) [2021-05-02 23:31:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2021-05-02 23:31:46,890 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 105 [2021-05-02 23:31:46,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:46,890 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2021-05-02 23:31:46,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 85 states have (on average 1.188235294117647) internal successors, (101), 84 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) [2021-05-02 23:31:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2021-05-02 23:31:46,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-05-02 23:31:46,890 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:46,890 INFO L523 BasicCegarLoop]: trace histogram [71, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:31:46,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-02 23:31:46,890 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:46,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:46,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1243912724, now seen corresponding path program 76 times [2021-05-02 23:31:46,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:46,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509490389] [2021-05-02 23:31:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:46,920 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4892 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4892} OutVars{main_~y~0=v_main_~y~0_4892} AuxVars[] AssignedVars[] [2021-05-02 23:31:46,921 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:31:46,922 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:46,938 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:46,961 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:31:46,988 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_4894 4294967296)) (< (mod (+ v_main_~x~0_984 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_984, main_~y~0=v_main_~y~0_4894} OutVars{main_~x~0=v_main_~x~0_984, main_~y~0=v_main_~y~0_4894} AuxVars[] AssignedVars[] [2021-05-02 23:31:46,990 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:31:46,990 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:46,993 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:31:47,019 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:31:47,052 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_988 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_988} OutVars{main_~x~0=v_main_~x~0_988} AuxVars[] AssignedVars[] [2021-05-02 23:31:47,054 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:31:47,054 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:47,069 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:47,101 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:31:47,131 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:31:47,131 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:47,141 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:47,148 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:31:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:47,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:31:51,254 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:51,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509490389] [2021-05-02 23:31:51,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [509490389] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:51,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:51,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2021-05-02 23:31:51,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162309213] [2021-05-02 23:31:51,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 23:31:51,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:51,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 23:31:51,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=7609, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 23:31:51,256 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 87 states, 86 states have (on average 1.186046511627907) internal successors, (102), 85 states have internal predecessors, (102), 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) [2021-05-02 23:31:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:57,738 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2021-05-02 23:31:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 23:31:57,738 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.186046511627907) internal successors, (102), 85 states have internal predecessors, (102), 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 106 [2021-05-02 23:31:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:57,739 INFO L225 Difference]: With dead ends: 118 [2021-05-02 23:31:57,739 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 23:31:57,740 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 7 SyntacticMatches, 12 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7778 ImplicationChecksByTransitivity, 8058.7ms TimeCoverageRelationStatistics Valid=979, Invalid=28091, Unknown=0, NotChecked=0, Total=29070 [2021-05-02 23:31:57,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 23:31:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-05-02 23:31:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 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) [2021-05-02 23:31:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2021-05-02 23:31:57,762 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2021-05-02 23:31:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:57,762 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2021-05-02 23:31:57,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 86 states have (on average 1.186046511627907) internal successors, (102), 85 states have internal predecessors, (102), 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) [2021-05-02 23:31:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2021-05-02 23:31:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 23:31:57,763 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:57,763 INFO L523 BasicCegarLoop]: trace histogram [72, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:31:57,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-02 23:31:57,763 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:57,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:57,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1536178167, now seen corresponding path program 77 times [2021-05-02 23:31:57,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:57,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856097798] [2021-05-02 23:31:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:57,789 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_4996 4294967296) 10) InVars {main_~y~0=v_main_~y~0_4996} OutVars{main_~y~0=v_main_~y~0_4996} AuxVars[] AssignedVars[] [2021-05-02 23:31:57,790 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:31:57,791 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:57,807 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:57,832 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:31:57,858 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_4998 4294967296)) (< (mod (+ v_main_~x~0_1002 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1002, main_~y~0=v_main_~y~0_4998} OutVars{main_~x~0=v_main_~x~0_1002, main_~y~0=v_main_~y~0_4998} AuxVars[] AssignedVars[] [2021-05-02 23:31:57,859 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:31:57,859 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:57,862 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:31:57,885 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:31:57,915 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1006 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1006} OutVars{main_~x~0=v_main_~x~0_1006} AuxVars[] AssignedVars[] [2021-05-02 23:31:57,916 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:31:57,916 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:57,931 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:57,960 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:31:57,989 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:31:57,990 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:31:57,999 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:31:58,006 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:31:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:58,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:32:02,489 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:02,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856097798] [2021-05-02 23:32:02,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1856097798] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:02,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:02,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2021-05-02 23:32:02,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169221624] [2021-05-02 23:32:02,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 23:32:02,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:02,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 23:32:02,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=7726, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 23:32:02,490 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 88 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 86 states have internal predecessors, (103), 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) [2021-05-02 23:32:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:10,907 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2021-05-02 23:32:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 23:32:10,908 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 86 states have internal predecessors, (103), 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 107 [2021-05-02 23:32:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:10,908 INFO L225 Difference]: With dead ends: 117 [2021-05-02 23:32:10,908 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 23:32:10,910 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 7 SyntacticMatches, 13 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5105 ImplicationChecksByTransitivity, 9428.9ms TimeCoverageRelationStatistics Valid=711, Invalid=28359, Unknown=0, NotChecked=0, Total=29070 [2021-05-02 23:32:10,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 23:32:10,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-05-02 23:32:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 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) [2021-05-02 23:32:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2021-05-02 23:32:10,938 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 107 [2021-05-02 23:32:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:10,939 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2021-05-02 23:32:10,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 86 states have internal predecessors, (103), 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) [2021-05-02 23:32:10,939 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2021-05-02 23:32:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-05-02 23:32:10,939 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:10,939 INFO L523 BasicCegarLoop]: trace histogram [73, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:32:10,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-02 23:32:10,939 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:10,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:10,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1819649868, now seen corresponding path program 78 times [2021-05-02 23:32:10,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:10,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91630324] [2021-05-02 23:32:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:10,968 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_5102 4294967296) 10) InVars {main_~y~0=v_main_~y~0_5102} OutVars{main_~y~0=v_main_~y~0_5102} AuxVars[] AssignedVars[] [2021-05-02 23:32:10,969 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:32:10,978 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:10,997 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:11,012 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:32:11,038 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_5104 4294967296)) (< (mod (+ v_main_~x~0_1020 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1020, main_~y~0=v_main_~y~0_5104} OutVars{main_~x~0=v_main_~x~0_1020, main_~y~0=v_main_~y~0_5104} AuxVars[] AssignedVars[] [2021-05-02 23:32:11,040 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:32:11,056 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:11,059 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:32:11,071 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:32:11,103 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1024 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1024} OutVars{main_~x~0=v_main_~x~0_1024} AuxVars[] AssignedVars[] [2021-05-02 23:32:11,104 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:32:11,105 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:11,120 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:11,152 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:32:11,183 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:32:11,184 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:11,193 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:11,201 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:32:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:32:15,345 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:15,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91630324] [2021-05-02 23:32:15,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [91630324] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:15,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:15,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2021-05-02 23:32:15,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128998324] [2021-05-02 23:32:15,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 23:32:15,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:15,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 23:32:15,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=8064, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 23:32:15,347 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 89 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 87 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) [2021-05-02 23:32:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:22,582 INFO L93 Difference]: Finished difference Result 120 states and 124 transitions. [2021-05-02 23:32:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 23:32:22,583 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 87 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 [2021-05-02 23:32:22,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:22,584 INFO L225 Difference]: With dead ends: 120 [2021-05-02 23:32:22,584 INFO L226 Difference]: Without dead ends: 112 [2021-05-02 23:32:22,585 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 9 SyntacticMatches, 10 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8082 ImplicationChecksByTransitivity, 8509.8ms TimeCoverageRelationStatistics Valid=799, Invalid=29651, Unknown=0, NotChecked=0, Total=30450 [2021-05-02 23:32:22,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-02 23:32:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-05-02 23:32:22,608 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) [2021-05-02 23:32:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2021-05-02 23:32:22,608 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 108 [2021-05-02 23:32:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:22,608 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2021-05-02 23:32:22,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 87 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) [2021-05-02 23:32:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2021-05-02 23:32:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 23:32:22,608 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:22,609 INFO L523 BasicCegarLoop]: trace histogram [74, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:32:22,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-02 23:32:22,609 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:22,609 INFO L82 PathProgramCache]: Analyzing trace with hash -2017338007, now seen corresponding path program 79 times [2021-05-02 23:32:22,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:22,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795365112] [2021-05-02 23:32:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:22,636 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_5210 4294967296) 10) InVars {main_~y~0=v_main_~y~0_5210} OutVars{main_~y~0=v_main_~y~0_5210} AuxVars[] AssignedVars[] [2021-05-02 23:32:22,637 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:32:22,645 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:22,661 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:22,694 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:32:22,722 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1038 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_5212 4294967296))) InVars {main_~x~0=v_main_~x~0_1038, main_~y~0=v_main_~y~0_5212} OutVars{main_~x~0=v_main_~x~0_1038, main_~y~0=v_main_~y~0_5212} AuxVars[] AssignedVars[] [2021-05-02 23:32:22,724 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:32:22,724 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:22,727 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:32:22,752 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:32:22,782 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1042 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1042} OutVars{main_~x~0=v_main_~x~0_1042} AuxVars[] AssignedVars[] [2021-05-02 23:32:22,783 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:32:22,784 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:22,802 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:22,834 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:32:22,864 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:32:22,864 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:22,873 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:22,880 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:32:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:22,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:32:27,519 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:27,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795365112] [2021-05-02 23:32:27,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1795365112] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:27,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:27,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2021-05-02 23:32:27,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740975898] [2021-05-02 23:32:27,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 23:32:27,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:27,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 23:32:27,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=8082, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 23:32:27,520 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 90 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 88 states have internal predecessors, (105), 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) [2021-05-02 23:32:36,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:36,398 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2021-05-02 23:32:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 23:32:36,399 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 88 states have internal predecessors, (105), 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 109 [2021-05-02 23:32:36,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:36,399 INFO L225 Difference]: With dead ends: 119 [2021-05-02 23:32:36,399 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 23:32:36,400 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 7 SyntacticMatches, 13 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5316 ImplicationChecksByTransitivity, 9832.7ms TimeCoverageRelationStatistics Valid=727, Invalid=29723, Unknown=0, NotChecked=0, Total=30450 [2021-05-02 23:32:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 23:32:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-05-02 23:32:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 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) [2021-05-02 23:32:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2021-05-02 23:32:36,425 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 109 [2021-05-02 23:32:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:36,425 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2021-05-02 23:32:36,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 88 states have internal predecessors, (105), 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) [2021-05-02 23:32:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2021-05-02 23:32:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-02 23:32:36,425 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:36,425 INFO L523 BasicCegarLoop]: trace histogram [75, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:32:36,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-02 23:32:36,425 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash 444264276, now seen corresponding path program 80 times [2021-05-02 23:32:36,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:36,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000250239] [2021-05-02 23:32:36,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:36,453 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_5320 4294967296) 10) InVars {main_~y~0=v_main_~y~0_5320} OutVars{main_~y~0=v_main_~y~0_5320} AuxVars[] AssignedVars[] [2021-05-02 23:32:36,454 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:32:36,454 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:36,474 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:36,497 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:32:36,525 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_5322 4294967296)) (< (mod (+ v_main_~x~0_1056 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1056, main_~y~0=v_main_~y~0_5322} OutVars{main_~x~0=v_main_~x~0_1056, main_~y~0=v_main_~y~0_5322} AuxVars[] AssignedVars[] [2021-05-02 23:32:36,526 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:32:36,527 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:36,529 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:32:36,555 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:32:36,590 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1060 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1060} OutVars{main_~x~0=v_main_~x~0_1060} AuxVars[] AssignedVars[] [2021-05-02 23:32:36,592 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:32:36,606 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:36,623 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:36,644 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:32:36,677 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:32:36,677 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:36,687 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:36,695 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:32:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:32:41,185 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:41,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000250239] [2021-05-02 23:32:41,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1000250239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:41,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:41,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2021-05-02 23:32:41,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052605605] [2021-05-02 23:32:41,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 23:32:41,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:41,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 23:32:41,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=8426, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 23:32:41,186 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 91 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 89 states have internal predecessors, (106), 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) [2021-05-02 23:32:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:50,130 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2021-05-02 23:32:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 23:32:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 89 states have internal predecessors, (106), 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 110 [2021-05-02 23:32:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:50,131 INFO L225 Difference]: With dead ends: 122 [2021-05-02 23:32:50,131 INFO L226 Difference]: Without dead ends: 114 [2021-05-02 23:32:50,132 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 6 SyntacticMatches, 13 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8470 ImplicationChecksByTransitivity, 9596.9ms TimeCoverageRelationStatistics Valid=821, Invalid=31041, Unknown=0, NotChecked=0, Total=31862 [2021-05-02 23:32:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-02 23:32:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2021-05-02 23:32:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 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) [2021-05-02 23:32:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2021-05-02 23:32:50,156 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2021-05-02 23:32:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:50,156 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2021-05-02 23:32:50,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 89 states have internal predecessors, (106), 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) [2021-05-02 23:32:50,156 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2021-05-02 23:32:50,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 23:32:50,157 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:50,157 INFO L523 BasicCegarLoop]: trace histogram [76, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:32:50,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-02 23:32:50,157 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:50,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:50,157 INFO L82 PathProgramCache]: Analyzing trace with hash -555476279, now seen corresponding path program 81 times [2021-05-02 23:32:50,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:50,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095660002] [2021-05-02 23:32:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:50,189 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_5432 4294967296) 10) InVars {main_~y~0=v_main_~y~0_5432} OutVars{main_~y~0=v_main_~y~0_5432} AuxVars[] AssignedVars[] [2021-05-02 23:32:50,190 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:32:50,200 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:50,223 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:50,248 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:32:50,278 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_5434 4294967296)) (< (mod (+ v_main_~x~0_1074 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1074, main_~y~0=v_main_~y~0_5434} OutVars{main_~x~0=v_main_~x~0_1074, main_~y~0=v_main_~y~0_5434} AuxVars[] AssignedVars[] [2021-05-02 23:32:50,279 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:32:50,280 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:50,284 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:32:50,316 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:32:50,353 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1078 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1078} OutVars{main_~x~0=v_main_~x~0_1078} AuxVars[] AssignedVars[] [2021-05-02 23:32:50,355 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:32:50,370 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:50,388 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:50,409 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:32:50,450 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:32:50,450 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:32:50,461 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:32:50,469 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:32:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:50,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:32:56,021 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:56,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095660002] [2021-05-02 23:32:56,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2095660002] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:56,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:56,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2021-05-02 23:32:56,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413009469] [2021-05-02 23:32:56,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 23:32:56,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:56,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 23:32:56,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=8543, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 23:32:56,022 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 92 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 90 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) [2021-05-02 23:33:06,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:33:06,004 INFO L93 Difference]: Finished difference Result 121 states and 124 transitions. [2021-05-02 23:33:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 23:33:06,005 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 90 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 [2021-05-02 23:33:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:33:06,005 INFO L225 Difference]: With dead ends: 121 [2021-05-02 23:33:06,005 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 23:33:06,007 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 8 SyntacticMatches, 11 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5715 ImplicationChecksByTransitivity, 11347.5ms TimeCoverageRelationStatistics Valid=919, Invalid=31301, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 23:33:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 23:33:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-05-02 23:33:06,032 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) [2021-05-02 23:33:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2021-05-02 23:33:06,032 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 111 [2021-05-02 23:33:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:33:06,032 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2021-05-02 23:33:06,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 90 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) [2021-05-02 23:33:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2021-05-02 23:33:06,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-05-02 23:33:06,033 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:33:06,033 INFO L523 BasicCegarLoop]: trace histogram [77, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:33:06,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-02 23:33:06,033 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:33:06,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:33:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1482662412, now seen corresponding path program 82 times [2021-05-02 23:33:06,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:33:06,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706456796] [2021-05-02 23:33:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:33:06,062 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_5546 4294967296) 10) InVars {main_~y~0=v_main_~y~0_5546} OutVars{main_~y~0=v_main_~y~0_5546} AuxVars[] AssignedVars[] [2021-05-02 23:33:06,063 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:33:06,064 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:06,088 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:06,111 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:33:06,141 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_5548 4294967296)) (< (mod (+ v_main_~x~0_1092 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1092, main_~y~0=v_main_~y~0_5548} OutVars{main_~x~0=v_main_~x~0_1092, main_~y~0=v_main_~y~0_5548} AuxVars[] AssignedVars[] [2021-05-02 23:33:06,143 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:33:06,159 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:06,162 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:33:06,174 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:33:06,239 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1096 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1096} OutVars{main_~x~0=v_main_~x~0_1096} AuxVars[] AssignedVars[] [2021-05-02 23:33:06,240 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:33:06,241 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:06,257 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:06,288 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:33:06,326 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:33:06,327 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:06,336 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:06,343 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:33:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:06,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:33:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:33:11,730 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:33:11,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706456796] [2021-05-02 23:33:11,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1706456796] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:33:11,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:33:11,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2021-05-02 23:33:11,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473259495] [2021-05-02 23:33:11,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 23:33:11,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:33:11,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 23:33:11,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=8796, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 23:33:11,731 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 93 states, 92 states have (on average 1.173913043478261) internal successors, (108), 91 states have internal predecessors, (108), 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) [2021-05-02 23:33:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:33:20,330 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2021-05-02 23:33:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 23:33:20,331 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.173913043478261) internal successors, (108), 91 states have internal predecessors, (108), 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 112 [2021-05-02 23:33:20,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:33:20,331 INFO L225 Difference]: With dead ends: 124 [2021-05-02 23:33:20,331 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 23:33:20,333 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 9 SyntacticMatches, 10 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8692 ImplicationChecksByTransitivity, 10632.0ms TimeCoverageRelationStatistics Valid=843, Invalid=32463, Unknown=0, NotChecked=0, Total=33306 [2021-05-02 23:33:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 23:33:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2021-05-02 23:33:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 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) [2021-05-02 23:33:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2021-05-02 23:33:20,357 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 112 [2021-05-02 23:33:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:33:20,357 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2021-05-02 23:33:20,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 92 states have (on average 1.173913043478261) internal successors, (108), 91 states have internal predecessors, (108), 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) [2021-05-02 23:33:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2021-05-02 23:33:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 23:33:20,358 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:33:20,358 INFO L523 BasicCegarLoop]: trace histogram [78, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:33:20,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-02 23:33:20,358 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:33:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:33:20,358 INFO L82 PathProgramCache]: Analyzing trace with hash -160661463, now seen corresponding path program 83 times [2021-05-02 23:33:20,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:33:20,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302790873] [2021-05-02 23:33:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:33:20,390 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_5662 4294967296) 10) InVars {main_~y~0=v_main_~y~0_5662} OutVars{main_~y~0=v_main_~y~0_5662} AuxVars[] AssignedVars[] [2021-05-02 23:33:20,391 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:33:20,399 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:20,423 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:20,441 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:33:20,481 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_5664 4294967296)) (< (mod (+ v_main_~x~0_1110 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1110, main_~y~0=v_main_~y~0_5664} OutVars{main_~x~0=v_main_~x~0_1110, main_~y~0=v_main_~y~0_5664} AuxVars[] AssignedVars[] [2021-05-02 23:33:20,482 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:33:20,499 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:20,502 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:33:20,514 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:33:20,547 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1114 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1114} OutVars{main_~x~0=v_main_~x~0_1114} AuxVars[] AssignedVars[] [2021-05-02 23:33:20,549 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:33:20,550 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:20,568 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:20,600 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:33:20,633 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:33:20,634 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:20,644 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:20,651 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:33:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:20,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:33:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:33:26,249 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:33:26,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302790873] [2021-05-02 23:33:26,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1302790873] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:33:26,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:33:26,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2021-05-02 23:33:26,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930486707] [2021-05-02 23:33:26,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 23:33:26,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:33:26,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 23:33:26,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=8818, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 23:33:26,250 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 94 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 92 states have internal predecessors, (109), 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) [2021-05-02 23:33:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:33:37,460 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2021-05-02 23:33:37,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 23:33:37,461 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 92 states have internal predecessors, (109), 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 113 [2021-05-02 23:33:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:33:37,462 INFO L225 Difference]: With dead ends: 123 [2021-05-02 23:33:37,462 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 23:33:37,463 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 8 SyntacticMatches, 12 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5737 ImplicationChecksByTransitivity, 11823.3ms TimeCoverageRelationStatistics Valid=759, Invalid=32547, Unknown=0, NotChecked=0, Total=33306 [2021-05-02 23:33:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 23:33:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-05-02 23:33:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 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) [2021-05-02 23:33:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2021-05-02 23:33:37,488 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 113 [2021-05-02 23:33:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:33:37,488 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2021-05-02 23:33:37,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 92 states have internal predecessors, (109), 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) [2021-05-02 23:33:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2021-05-02 23:33:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-05-02 23:33:37,489 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:33:37,489 INFO L523 BasicCegarLoop]: trace histogram [79, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:33:37,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-02 23:33:37,489 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:33:37,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:33:37,489 INFO L82 PathProgramCache]: Analyzing trace with hash -2128305004, now seen corresponding path program 84 times [2021-05-02 23:33:37,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:33:37,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137532808] [2021-05-02 23:33:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:33:37,525 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_5780 4294967296) 10) InVars {main_~y~0=v_main_~y~0_5780} OutVars{main_~y~0=v_main_~y~0_5780} AuxVars[] AssignedVars[] [2021-05-02 23:33:37,526 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:33:37,538 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:37,564 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:37,591 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:33:37,625 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1128 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_5782 4294967296))) InVars {main_~x~0=v_main_~x~0_1128, main_~y~0=v_main_~y~0_5782} OutVars{main_~x~0=v_main_~x~0_1128, main_~y~0=v_main_~y~0_5782} AuxVars[] AssignedVars[] [2021-05-02 23:33:37,626 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:33:37,627 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:37,631 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:33:37,667 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:33:37,705 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1132 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1132} OutVars{main_~x~0=v_main_~x~0_1132} AuxVars[] AssignedVars[] [2021-05-02 23:33:37,706 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:33:37,723 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:37,742 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:37,766 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:33:37,805 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:33:37,806 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:37,817 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:37,826 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:33:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:33:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:33:42,948 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:33:42,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137532808] [2021-05-02 23:33:42,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2137532808] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:33:42,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:33:42,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2021-05-02 23:33:42,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170686001] [2021-05-02 23:33:42,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 23:33:42,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:33:42,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 23:33:42,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=9174, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 23:33:42,950 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 95 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 93 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) [2021-05-02 23:33:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:33:52,709 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2021-05-02 23:33:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 23:33:52,710 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 93 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 [2021-05-02 23:33:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:33:52,711 INFO L225 Difference]: With dead ends: 126 [2021-05-02 23:33:52,711 INFO L226 Difference]: Without dead ends: 118 [2021-05-02 23:33:52,712 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 9 SyntacticMatches, 10 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8909 ImplicationChecksByTransitivity, 10343.4ms TimeCoverageRelationStatistics Valid=816, Invalid=33594, Unknown=0, NotChecked=0, Total=34410 [2021-05-02 23:33:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-05-02 23:33:52,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2021-05-02 23:33:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 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) [2021-05-02 23:33:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2021-05-02 23:33:52,738 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2021-05-02 23:33:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:33:52,738 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2021-05-02 23:33:52,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 93 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) [2021-05-02 23:33:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2021-05-02 23:33:52,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 23:33:52,738 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:33:52,738 INFO L523 BasicCegarLoop]: trace histogram [80, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:33:52,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-02 23:33:52,739 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:33:52,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:33:52,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1299254665, now seen corresponding path program 85 times [2021-05-02 23:33:52,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:33:52,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345296328] [2021-05-02 23:33:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:33:52,770 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_5900 4294967296) 10) InVars {main_~y~0=v_main_~y~0_5900} OutVars{main_~y~0=v_main_~y~0_5900} AuxVars[] AssignedVars[] [2021-05-02 23:33:52,771 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:33:52,772 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:52,791 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:52,816 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:33:52,842 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_5902 4294967296)) (< (mod (+ v_main_~x~0_1146 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1146, main_~y~0=v_main_~y~0_5902} OutVars{main_~x~0=v_main_~x~0_1146, main_~y~0=v_main_~y~0_5902} AuxVars[] AssignedVars[] [2021-05-02 23:33:52,843 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:33:52,859 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:52,862 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:33:52,874 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:33:52,908 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1150 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1150} OutVars{main_~x~0=v_main_~x~0_1150} AuxVars[] AssignedVars[] [2021-05-02 23:33:52,909 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:33:52,910 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:33:52,933 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:33:52,968 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:33:53,001 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:33:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:53,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:33:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:33:58,982 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:33:58,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345296328] [2021-05-02 23:33:58,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1345296328] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:33:58,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:33:58,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2021-05-02 23:33:58,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763973736] [2021-05-02 23:33:58,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 23:33:58,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:33:58,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 23:33:58,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=9198, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 23:33:58,984 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 96 states, 95 states have (on average 1.168421052631579) internal successors, (111), 94 states have internal predecessors, (111), 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) [2021-05-02 23:34:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:34:10,795 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2021-05-02 23:34:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 23:34:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.168421052631579) internal successors, (111), 94 states have internal predecessors, (111), 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 115 [2021-05-02 23:34:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:34:10,796 INFO L225 Difference]: With dead ends: 124 [2021-05-02 23:34:10,796 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 23:34:10,798 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 6 SyntacticMatches, 13 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5999 ImplicationChecksByTransitivity, 12784.8ms TimeCoverageRelationStatistics Valid=775, Invalid=34007, Unknown=0, NotChecked=0, Total=34782 [2021-05-02 23:34:10,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 23:34:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-02 23:34:10,824 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) [2021-05-02 23:34:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2021-05-02 23:34:10,824 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 115 [2021-05-02 23:34:10,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:34:10,824 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2021-05-02 23:34:10,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 95 states have (on average 1.168421052631579) internal successors, (111), 94 states have internal predecessors, (111), 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) [2021-05-02 23:34:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2021-05-02 23:34:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-05-02 23:34:10,825 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:34:10,825 INFO L523 BasicCegarLoop]: trace histogram [80, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:34:10,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-02 23:34:10,825 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:34:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:34:10,825 INFO L82 PathProgramCache]: Analyzing trace with hash 654704579, now seen corresponding path program 86 times [2021-05-02 23:34:10,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:34:10,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146840801] [2021-05-02 23:34:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:34:10,864 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_6009 4294967296) 10) InVars {main_~y~0=v_main_~y~0_6009} OutVars{main_~y~0=v_main_~y~0_6009} AuxVars[] AssignedVars[] [2021-05-02 23:34:10,865 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:34:10,876 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:10,893 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:34:10,919 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:34:10,952 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_6011 4294967296)) (< (mod (+ v_main_~x~0_1161 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1161, main_~y~0=v_main_~y~0_6011} OutVars{main_~x~0=v_main_~x~0_1161, main_~y~0=v_main_~y~0_6011} AuxVars[] AssignedVars[] [2021-05-02 23:34:10,953 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:34:10,971 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:10,974 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:34:10,987 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:34:11,024 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1165 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1165} OutVars{main_~x~0=v_main_~x~0_1165} AuxVars[] AssignedVars[] [2021-05-02 23:34:11,025 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:34:11,041 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:11,062 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:34:11,084 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:34:11,122 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:34:11,123 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:11,131 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 23:34:11,137 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:34:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:11,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:34:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:34:17,985 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:34:17,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146840801] [2021-05-02 23:34:17,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [146840801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:34:17,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:34:17,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2021-05-02 23:34:17,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484685519] [2021-05-02 23:34:17,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 23:34:17,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:34:17,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 23:34:17,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=9391, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 23:34:17,987 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 97 states, 96 states have (on average 1.1875) internal successors, (114), 95 states have internal predecessors, (114), 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) [2021-05-02 23:34:30,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:34:30,346 INFO L93 Difference]: Finished difference Result 128 states and 131 transitions. [2021-05-02 23:34:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 23:34:30,347 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.1875) internal successors, (114), 95 states have internal predecessors, (114), 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 118 [2021-05-02 23:34:30,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:34:30,348 INFO L225 Difference]: With dead ends: 128 [2021-05-02 23:34:30,348 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 23:34:30,349 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 7 SyntacticMatches, 15 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6112 ImplicationChecksByTransitivity, 13889.5ms TimeCoverageRelationStatistics Valid=783, Invalid=34749, Unknown=0, NotChecked=0, Total=35532 [2021-05-02 23:34:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 23:34:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 23:34:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 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) [2021-05-02 23:34:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2021-05-02 23:34:30,376 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 118 [2021-05-02 23:34:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:34:30,376 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2021-05-02 23:34:30,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 96 states have (on average 1.1875) internal successors, (114), 95 states have internal predecessors, (114), 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) [2021-05-02 23:34:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2021-05-02 23:34:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 23:34:30,377 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:34:30,377 INFO L523 BasicCegarLoop]: trace histogram [81, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:34:30,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-02 23:34:30,377 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:34:30,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:34:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1673205818, now seen corresponding path program 87 times [2021-05-02 23:34:30,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:34:30,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944650043] [2021-05-02 23:34:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:34:30,425 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_6122 4294967296) 10) InVars {main_~y~0=v_main_~y~0_6122} OutVars{main_~y~0=v_main_~y~0_6122} AuxVars[] AssignedVars[] [2021-05-02 23:34:30,426 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:34:30,427 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:30,452 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:34:30,491 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:34:30,545 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1180 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_6124 4294967296))) InVars {main_~x~0=v_main_~x~0_1180, main_~y~0=v_main_~y~0_6124} OutVars{main_~x~0=v_main_~x~0_1180, main_~y~0=v_main_~y~0_6124} AuxVars[] AssignedVars[] [2021-05-02 23:34:30,547 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:34:30,574 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:30,579 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:34:30,599 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:34:30,656 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1184 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1184} OutVars{main_~x~0=v_main_~x~0_1184} AuxVars[] AssignedVars[] [2021-05-02 23:34:30,658 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:34:30,659 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:30,696 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:34:30,754 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:34:30,815 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:34:30,816 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:30,832 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:34:30,845 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:34:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:31,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:34:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:34:38,204 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:34:38,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944650043] [2021-05-02 23:34:38,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [944650043] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:34:38,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:34:38,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2021-05-02 23:34:38,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441100210] [2021-05-02 23:34:38,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 23:34:38,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:34:38,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 23:34:38,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=9762, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 23:34:38,206 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 98 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 96 states have internal predecessors, (115), 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) [2021-05-02 23:34:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:34:53,673 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2021-05-02 23:34:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 23:34:53,676 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 96 states have internal predecessors, (115), 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 119 [2021-05-02 23:34:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:34:53,677 INFO L225 Difference]: With dead ends: 129 [2021-05-02 23:34:53,677 INFO L226 Difference]: Without dead ends: 121 [2021-05-02 23:34:53,678 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 7 SyntacticMatches, 14 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9633 ImplicationChecksByTransitivity, 15199.1ms TimeCoverageRelationStatistics Valid=834, Invalid=35838, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 23:34:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-02 23:34:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-05-02 23:34:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 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) [2021-05-02 23:34:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2021-05-02 23:34:53,707 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 119 [2021-05-02 23:34:53,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:34:53,707 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2021-05-02 23:34:53,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 96 states have internal predecessors, (115), 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) [2021-05-02 23:34:53,707 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2021-05-02 23:34:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-05-02 23:34:53,707 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:34:53,707 INFO L523 BasicCegarLoop]: trace histogram [82, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:34:53,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-02 23:34:53,708 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:34:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:34:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1112994141, now seen corresponding path program 88 times [2021-05-02 23:34:53,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:34:53,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210390445] [2021-05-02 23:34:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:34:53,759 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_6237 4294967296) 10) InVars {main_~y~0=v_main_~y~0_6237} OutVars{main_~y~0=v_main_~y~0_6237} AuxVars[] AssignedVars[] [2021-05-02 23:34:53,760 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:34:53,761 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:53,788 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:34:53,832 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:34:53,881 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_6239 4294967296)) (< (mod (+ v_main_~x~0_1199 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1199, main_~y~0=v_main_~y~0_6239} OutVars{main_~x~0=v_main_~x~0_1199, main_~y~0=v_main_~y~0_6239} AuxVars[] AssignedVars[] [2021-05-02 23:34:53,883 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:34:53,884 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:53,890 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:34:53,941 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:34:54,013 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1203 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1203} OutVars{main_~x~0=v_main_~x~0_1203} AuxVars[] AssignedVars[] [2021-05-02 23:34:54,015 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:34:54,016 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:54,048 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:34:54,114 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:34:54,181 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:34:54,182 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:34:54,201 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:34:54,216 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:34:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:54,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:34:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:35:03,124 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:35:03,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210390445] [2021-05-02 23:35:03,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [210390445] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:35:03,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:35:03,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2021-05-02 23:35:03,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594783245] [2021-05-02 23:35:03,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 23:35:03,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:35:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 23:35:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=9962, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 23:35:03,126 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 99 states, 98 states have (on average 1.183673469387755) internal successors, (116), 97 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) [2021-05-02 23:35:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:35:16,941 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2021-05-02 23:35:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 23:35:16,942 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.183673469387755) internal successors, (116), 97 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) Word has length 120 [2021-05-02 23:35:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:35:16,943 INFO L225 Difference]: With dead ends: 130 [2021-05-02 23:35:16,943 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 23:35:16,945 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 6 SyntacticMatches, 15 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9879 ImplicationChecksByTransitivity, 15890.0ms TimeCoverageRelationStatistics Valid=840, Invalid=36602, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 23:35:16,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 23:35:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-02 23:35:16,973 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) [2021-05-02 23:35:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2021-05-02 23:35:16,974 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 120 [2021-05-02 23:35:16,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:35:16,974 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2021-05-02 23:35:16,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 98 states have (on average 1.183673469387755) internal successors, (116), 97 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) [2021-05-02 23:35:16,974 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2021-05-02 23:35:16,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 23:35:16,974 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:35:16,974 INFO L523 BasicCegarLoop]: trace histogram [83, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:35:16,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-02 23:35:16,975 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:35:16,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:35:16,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1585846950, now seen corresponding path program 89 times [2021-05-02 23:35:16,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:35:16,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807715558] [2021-05-02 23:35:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:35:17,019 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_6354 4294967296) 10) InVars {main_~y~0=v_main_~y~0_6354} OutVars{main_~y~0=v_main_~y~0_6354} AuxVars[] AssignedVars[] [2021-05-02 23:35:17,020 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:35:17,033 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:35:17,066 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:35:17,092 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:35:17,140 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_6356 4294967296)) (< (mod (+ v_main_~x~0_1218 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1218, main_~y~0=v_main_~y~0_6356} OutVars{main_~x~0=v_main_~x~0_1218, main_~y~0=v_main_~y~0_6356} AuxVars[] AssignedVars[] [2021-05-02 23:35:17,141 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:35:17,143 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:35:17,148 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:35:17,194 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:35:17,259 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1222 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1222} OutVars{main_~x~0=v_main_~x~0_1222} AuxVars[] AssignedVars[] [2021-05-02 23:35:17,261 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:35:17,286 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:35:17,310 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:35:17,340 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:35:17,385 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:35:17,387 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:35:17,399 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:35:17,410 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:35:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:35:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:35:25,944 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:35:25,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807715558] [2021-05-02 23:35:25,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1807715558] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:35:25,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:35:25,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2021-05-02 23:35:25,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467412700] [2021-05-02 23:35:25,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 23:35:25,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:35:25,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 23:35:25,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=9982, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 23:35:25,946 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 100 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 98 states have internal predecessors, (117), 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) [2021-05-02 23:35:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:35:42,002 INFO L93 Difference]: Finished difference Result 131 states and 134 transitions. [2021-05-02 23:35:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 23:35:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 98 states have internal predecessors, (117), 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 121 [2021-05-02 23:35:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:35:42,004 INFO L225 Difference]: With dead ends: 131 [2021-05-02 23:35:42,005 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 23:35:42,006 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 9 SyntacticMatches, 13 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6431 ImplicationChecksByTransitivity, 17543.6ms TimeCoverageRelationStatistics Valid=807, Invalid=37023, Unknown=0, NotChecked=0, Total=37830 [2021-05-02 23:35:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 23:35:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-05-02 23:35:42,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 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) [2021-05-02 23:35:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2021-05-02 23:35:42,034 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 121 [2021-05-02 23:35:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:35:42,034 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2021-05-02 23:35:42,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 98 states have internal predecessors, (117), 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) [2021-05-02 23:35:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2021-05-02 23:35:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-02 23:35:42,035 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:35:42,035 INFO L523 BasicCegarLoop]: trace histogram [84, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:35:42,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-02 23:35:42,035 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:35:42,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:35:42,036 INFO L82 PathProgramCache]: Analyzing trace with hash 935585155, now seen corresponding path program 90 times [2021-05-02 23:35:42,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:35:42,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074730257] [2021-05-02 23:35:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:35:42,079 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_6473 4294967296) 10) InVars {main_~y~0=v_main_~y~0_6473} OutVars{main_~y~0=v_main_~y~0_6473} AuxVars[] AssignedVars[] [2021-05-02 23:35:42,081 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:35:42,093 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:35:42,123 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:35:42,141 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:35:42,181 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1237 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_6475 4294967296))) InVars {main_~x~0=v_main_~x~0_1237, main_~y~0=v_main_~y~0_6475} OutVars{main_~x~0=v_main_~x~0_1237, main_~y~0=v_main_~y~0_6475} AuxVars[] AssignedVars[] [2021-05-02 23:35:42,183 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:35:42,184 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:35:42,188 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:35:42,229 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:35:42,278 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1241 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1241} OutVars{main_~x~0=v_main_~x~0_1241} AuxVars[] AssignedVars[] [2021-05-02 23:35:42,280 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:35:42,281 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:35:42,305 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:35:42,361 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:35:42,404 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:35:42,405 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:35:42,418 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:35:42,431 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:35:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:35:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:35:50,304 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:35:50,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074730257] [2021-05-02 23:35:50,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1074730257] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:35:50,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:35:50,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2021-05-02 23:35:50,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734813662] [2021-05-02 23:35:50,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 23:35:50,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:35:50,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 23:35:50,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=10368, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 23:35:50,306 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 101 states, 100 states have (on average 1.18) internal successors, (118), 99 states have internal predecessors, (118), 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) [2021-05-02 23:36:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:36:03,890 INFO L93 Difference]: Finished difference Result 132 states and 135 transitions. [2021-05-02 23:36:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 23:36:03,891 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.18) internal successors, (118), 99 states have internal predecessors, (118), 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 122 [2021-05-02 23:36:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:36:03,892 INFO L225 Difference]: With dead ends: 132 [2021-05-02 23:36:03,892 INFO L226 Difference]: Without dead ends: 124 [2021-05-02 23:36:03,894 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 7 SyntacticMatches, 14 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10271 ImplicationChecksByTransitivity, 15751.1ms TimeCoverageRelationStatistics Valid=852, Invalid=38154, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 23:36:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-05-02 23:36:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-05-02 23:36:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 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) [2021-05-02 23:36:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2021-05-02 23:36:03,922 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2021-05-02 23:36:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:36:03,922 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2021-05-02 23:36:03,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 100 states have (on average 1.18) internal successors, (118), 99 states have internal predecessors, (118), 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) [2021-05-02 23:36:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2021-05-02 23:36:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 23:36:03,923 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:36:03,923 INFO L523 BasicCegarLoop]: trace histogram [85, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:36:03,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-02 23:36:03,923 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:36:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:36:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1790569082, now seen corresponding path program 91 times [2021-05-02 23:36:03,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:36:03,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865496796] [2021-05-02 23:36:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:36:03,971 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_6594 4294967296) 10) InVars {main_~y~0=v_main_~y~0_6594} OutVars{main_~y~0=v_main_~y~0_6594} AuxVars[] AssignedVars[] [2021-05-02 23:36:03,973 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:36:03,974 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:36:04,006 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:36:04,053 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:36:04,105 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1256 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_6596 4294967296))) InVars {main_~x~0=v_main_~x~0_1256, main_~y~0=v_main_~y~0_6596} OutVars{main_~x~0=v_main_~x~0_1256, main_~y~0=v_main_~y~0_6596} AuxVars[] AssignedVars[] [2021-05-02 23:36:04,107 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:36:04,131 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:36:04,136 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:36:04,156 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:36:04,210 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1260 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1260} OutVars{main_~x~0=v_main_~x~0_1260} AuxVars[] AssignedVars[] [2021-05-02 23:36:04,211 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:36:04,232 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:36:04,259 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:36:04,392 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-02 23:36:04,420 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:36:04,465 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:36:04,466 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:36:04,480 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:36:04,492 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:36:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:04,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:36:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:36:14,240 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:36:14,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865496796] [2021-05-02 23:36:14,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [865496796] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:36:14,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:36:14,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2021-05-02 23:36:14,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744758476] [2021-05-02 23:36:14,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 23:36:14,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:36:14,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 23:36:14,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=10386, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 23:36:14,242 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 102 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 100 states have internal predecessors, (119), 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) [2021-05-02 23:36:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:36:42,927 INFO L93 Difference]: Finished difference Result 133 states and 136 transitions. [2021-05-02 23:36:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 23:36:42,930 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 100 states have internal predecessors, (119), 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 123 [2021-05-02 23:36:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:36:42,930 INFO L225 Difference]: With dead ends: 133 [2021-05-02 23:36:42,931 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 23:36:42,933 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 9 SyntacticMatches, 13 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6666 ImplicationChecksByTransitivity, 25370.8ms TimeCoverageRelationStatistics Valid=823, Invalid=38579, Unknown=0, NotChecked=0, Total=39402 [2021-05-02 23:36:42,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 23:36:42,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-05-02 23:36:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 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) [2021-05-02 23:36:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2021-05-02 23:36:42,963 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 123 [2021-05-02 23:36:42,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:36:42,963 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2021-05-02 23:36:42,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 100 states have internal predecessors, (119), 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) [2021-05-02 23:36:42,963 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2021-05-02 23:36:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-05-02 23:36:42,964 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:36:42,964 INFO L523 BasicCegarLoop]: trace histogram [86, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:36:42,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-02 23:36:42,964 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:36:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:36:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1769700253, now seen corresponding path program 92 times [2021-05-02 23:36:42,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:36:42,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307160302] [2021-05-02 23:36:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:36:43,035 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_6717 4294967296) 10) InVars {main_~y~0=v_main_~y~0_6717} OutVars{main_~y~0=v_main_~y~0_6717} AuxVars[] AssignedVars[] [2021-05-02 23:36:43,037 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:36:43,056 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:36:43,090 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:36:43,124 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:36:43,184 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1275 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_6719 4294967296))) InVars {main_~x~0=v_main_~x~0_1275, main_~y~0=v_main_~y~0_6719} OutVars{main_~x~0=v_main_~x~0_1275, main_~y~0=v_main_~y~0_6719} AuxVars[] AssignedVars[] [2021-05-02 23:36:43,186 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:36:43,188 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:36:43,195 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:36:43,252 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:36:43,325 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1279 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1279} OutVars{main_~x~0=v_main_~x~0_1279} AuxVars[] AssignedVars[] [2021-05-02 23:36:43,327 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:36:43,329 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:36:43,373 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:36:43,434 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:36:43,496 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:36:43,498 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:36:43,517 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:36:43,532 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:36:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:43,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:36:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:36:54,257 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:36:54,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307160302] [2021-05-02 23:36:54,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1307160302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:36:54,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:36:54,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2021-05-02 23:36:54,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588226461] [2021-05-02 23:36:54,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 23:36:54,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:36:54,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 23:36:54,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=10598, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 23:36:54,259 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 103 states, 102 states have (on average 1.1764705882352942) internal successors, (120), 101 states have internal predecessors, (120), 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) [2021-05-02 23:37:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:37:19,014 INFO L93 Difference]: Finished difference Result 134 states and 137 transitions. [2021-05-02 23:37:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 23:37:19,018 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.1764705882352942) internal successors, (120), 101 states have internal predecessors, (120), 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 124 [2021-05-02 23:37:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:37:19,019 INFO L225 Difference]: With dead ends: 134 [2021-05-02 23:37:19,019 INFO L226 Difference]: Without dead ends: 126 [2021-05-02 23:37:19,021 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 8 SyntacticMatches, 14 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10451 ImplicationChecksByTransitivity, 23777.3ms TimeCoverageRelationStatistics Valid=817, Invalid=39383, Unknown=0, NotChecked=0, Total=40200 [2021-05-02 23:37:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-05-02 23:37:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-05-02 23:37:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 121 states have internal predecessors, (123), 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) [2021-05-02 23:37:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2021-05-02 23:37:19,051 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 124 [2021-05-02 23:37:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:37:19,051 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2021-05-02 23:37:19,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 102 states have (on average 1.1764705882352942) internal successors, (120), 101 states have internal predecessors, (120), 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) [2021-05-02 23:37:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2021-05-02 23:37:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 23:37:19,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:37:19,052 INFO L523 BasicCegarLoop]: trace histogram [87, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:37:19,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-02 23:37:19,052 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:37:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:37:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash -468899942, now seen corresponding path program 93 times [2021-05-02 23:37:19,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:37:19,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247441910] [2021-05-02 23:37:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:37:19,147 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_6842 4294967296) 10) InVars {main_~y~0=v_main_~y~0_6842} OutVars{main_~y~0=v_main_~y~0_6842} AuxVars[] AssignedVars[] [2021-05-02 23:37:19,149 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:37:19,151 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:37:19,196 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:37:19,266 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:37:19,374 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1294 1) 4294967296) 268435455) (<= 10 (mod v_main_~y~0_6844 4294967296))) InVars {main_~x~0=v_main_~x~0_1294, main_~y~0=v_main_~y~0_6844} OutVars{main_~x~0=v_main_~x~0_1294, main_~y~0=v_main_~y~0_6844} AuxVars[] AssignedVars[] [2021-05-02 23:37:19,377 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:37:19,437 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:37:19,444 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:37:19,485 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:37:19,603 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1298 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1298} OutVars{main_~x~0=v_main_~x~0_1298} AuxVars[] AssignedVars[] [2021-05-02 23:37:19,605 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:37:19,647 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:37:19,701 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:37:19,753 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:37:19,860 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-02 23:37:19,865 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:37:19,867 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:37:19,894 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:37:19,919 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:37:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:37:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:37:20,331 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2021-05-02 23:37:34,416 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:37:34,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247441910] [2021-05-02 23:37:34,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [247441910] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:37:34,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:37:34,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2021-05-02 23:37:34,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146284044] [2021-05-02 23:37:34,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 23:37:34,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:37:34,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 23:37:34,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=10798, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 23:37:34,418 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 104 states, 103 states have (on average 1.174757281553398) internal successors, (121), 102 states have internal predecessors, (121), 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) [2021-05-02 23:38:10,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:38:10,208 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2021-05-02 23:38:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 23:38:10,213 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 1.174757281553398) internal successors, (121), 102 states have internal predecessors, (121), 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 125 [2021-05-02 23:38:10,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:38:10,214 INFO L225 Difference]: With dead ends: 135 [2021-05-02 23:38:10,214 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 23:38:10,216 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 8 SyntacticMatches, 14 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6918 ImplicationChecksByTransitivity, 33459.9ms TimeCoverageRelationStatistics Valid=839, Invalid=40167, Unknown=0, NotChecked=0, Total=41006 [2021-05-02 23:38:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 23:38:10,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-05-02 23:38:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 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) [2021-05-02 23:38:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2021-05-02 23:38:10,249 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 125 [2021-05-02 23:38:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:38:10,249 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2021-05-02 23:38:10,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 103 states have (on average 1.174757281553398) internal successors, (121), 102 states have internal predecessors, (121), 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) [2021-05-02 23:38:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2021-05-02 23:38:10,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-05-02 23:38:10,250 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:38:10,250 INFO L523 BasicCegarLoop]: trace histogram [88, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:38:10,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-02 23:38:10,250 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:38:10,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:38:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1201204035, now seen corresponding path program 94 times [2021-05-02 23:38:10,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:38:10,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827376311] [2021-05-02 23:38:10,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:38:10,370 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_6969 4294967296) 10) InVars {main_~y~0=v_main_~y~0_6969} OutVars{main_~y~0=v_main_~y~0_6969} AuxVars[] AssignedVars[] [2021-05-02 23:38:10,372 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:38:10,401 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:38:10,465 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:38:10,538 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:38:10,647 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-02 23:38:10,657 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 10 (mod v_main_~y~0_6971 4294967296)) (< (mod (+ v_main_~x~0_1313 1) 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_1313, main_~y~0=v_main_~y~0_6971} OutVars{main_~x~0=v_main_~x~0_1313, main_~y~0=v_main_~y~0_6971} AuxVars[] AssignedVars[] [2021-05-02 23:38:10,660 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size [2021-05-02 23:38:10,713 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:38:10,724 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-02 23:38:10,765 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.9 percent of original size 62 [2021-05-02 23:38:10,870 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-02 23:38:10,897 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1317 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_1317} OutVars{main_~x~0=v_main_~x~0_1317} AuxVars[] AssignedVars[] [2021-05-02 23:38:10,900 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size [2021-05-02 23:38:10,902 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:38:10,965 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:38:11,092 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.1 percent of original size 64 [2021-05-02 23:38:11,219 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-02 23:38:11,224 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:38:11,226 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:38:11,259 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:38:11,287 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:38:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:11,490 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-05-02 23:38:11,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:38:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:38:11,947 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2021-05-02 23:38:28,878 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:38:28,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827376311] [2021-05-02 23:38:28,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1827376311] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:38:28,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:38:28,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2021-05-02 23:38:28,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974483341] [2021-05-02 23:38:28,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 23:38:28,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:38:28,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 23:38:28,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=11204, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 23:38:28,881 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 105 states, 104 states have (on average 1.1730769230769231) internal successors, (122), 103 states have internal predecessors, (122), 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)